### Seminars, Colloquia and Research talks

### PDE and Applied Math Seminars

Dr. Andreas Aristotelous, Nov 8, 2023 Title: "Modeling immune responses to biofilm and viral infections”

Description: We introduce mathematical modeling frameworks to study microbial interactions and infections. Firstly, we present a model that captures the dynamics of biofilm volume fraction, oxygen concentration, and the diffusive spread of virulence factors, such as toxins. This model, studied both in 1D and 2D contexts, offers insights into the complex interplay between oxygen, toxins, neutrophils, and bacteria, highlighting scenarios leading to either infection elimination or its transformation into a chronic state. Secondly, we briefly present a lattice-based hybrid discrete continuum approach tailored for understanding SARS-CoV-2 exposure and infection progression within the human lung's alveolar region.Dr. Pat Wilber: Oct. 6, 2022. "Title: Relaxed Moire Patterns in Bilayer Graphene"

Abstract: In this talk, I will start by explaining what graphene is and why graphene is interesting from the point of view of materials science. I will also explain what a moire pattern is. I will then introduce the idea of a relaxed moire pattern in a bilayer of graphene. To understand relaxed moire patterns, some of the basic mechanics of interacting graphene layers will be discussed. Finally, I will talk about a research problem I worked on recently that is motivated by explaining and predicting relaxed moire patterns in bilayer graphene. Dr. Dane Quinn, Sept 15, 2022: "Population models."

Spring 2021

Dr. Alex Hoover of UA Math who will present a live virtual talk on " The Emergence of Neuromechanical Wave Resonance in Jellyfish Swimming.”

Abstract: In order for an organism to have a robust mode of locomotion, their neuromuscular organization must be adaptable in a changing environment. In jellyfish, the activation and release of muscular tension is governed by the interaction of pacemakers with the underlying motor nerve net that communicates with the musculature. This set of equally-spaced pacemakers, located at bell rim, alter their firing frequency in response to environmental cues, forming a distributed mechanism to control the bell's muscular contraction. In this talk, we explore the control of medusan neuromuscular activation in with a model jellyfish bell immersed in a viscous fluid and use numerical simulations to describe the interplay between active muscle contraction, passive body elasticity, and fluid forces. This model is then used to explore the interplay between the speed of neuromechanical activation, fluid dynamics, and the material properties of the bell, and we use it to discover the presence of an entirely new phenomena known of neuromechanical wave resonance, which has many potential applications for the actuation soft-body robotics and tissue-engineered pumps.Dr. Lingxing Yao, assistant professor of mathematics, "A model system and its simulations for cell migration"

In this presentation, we introduce a mathematical model system for cell dynamics, which includes cell membrane, transmembrane osmotic water flow, actomyosin network polymerization/depolymerization. The features of the model can be organized into three main modules: 1) An osmotically active solute obeys an advection-diffusion equation in a region demarcated by a deformable membrane. 2) The interfacial membrane allows transmembrane water flow which is determined by osmotic and mechanical pressure differences across the membrane. 3) An actin network is constantly undergoing polymerization/depolymerization (with or without myosin contraction) and interacting with the cell membrane. To numerically compute solutions of the model, we also develop a numerical framework, which is based on an immersed boundary method for fluid-structure interaction and a Cartesian grid embedded boundary method for the solute and actomyosin network. Using the model system, we can explore different mechanisms and key biological factors that drive cell migration. We will demonstrate the model system with biological studies in cells, including migrations driven in different physiological conditions and the energy expenditure in migrations.Fall 2019

Dr. Pat Wilber. Nov. 14, 2019: "Buckling Problems Motivated by Bilayer Graphene and other Layered Materials"

Dr. Alex Hoover. Sept. 19, 2019: "From Nerve Net to Vortex Ring: A Computational Modeling Approach to Medusan Biomechanics"

Fall 2016 seminar seriesSpring 2016 seminar series

Fall 2015 seminar series

Spring 2015 seminar series

Fall 2014 seminar series

Spring 2014 seminar series

Fall 2013 seminar series

Spring 2013 seminar series

Fall 2012 seminar series

### Algebra and Combinatorics Seminars

Dr. Stefan Forcey. Jan 25, 2023: "Mysteries of the Mandelbrot set!"

Dr. Stefan Forcey. Oct. 21, 2019: "Using five dimensions to identify a first cousin once removed: Phylogenetic Polytopes"

13 April 2018, 4:25pm, CAS 220

How to stock shelves in a polygonal library, or graft cherry trees to a root stock part 2, Stefan Forcey

University of Akron

6 April 2018, 4:25pm, CAS 220

How to stock shelves in a polygonal library, or graft cherry trees to a root stock, Stefan Forcey

University of Akron

9 March 9 2018, 4:30, CAS 220

Doubly-invariant subgroups for the prime p=2, Jeff Riedl

University of Akron

23 February 2018, 4:25pm, CAS 220

A graph on $p$-tuples of partitions (and if there's time, why we care), JP Cossey

University of Akron

9 February 2018, 4:25pm, CAS 220

A partition by centers of centralizers for semi-extraspecial groups, Mark Lewis

Kent State University

2 February 2018, 4:25pm, CAS 220

Partitions with small defect and what to do with them part 2, JP Cossey

University of Akron

26 January 2018, 4:25pm, CAS 220

Partitions with small defect and what to do with them, JP Cossey

University of Akron

28 April 2017, 4:25pm, CAS 220

When hobbies overlap: core partitions and Catalan numbers part 2, JP Cossey

University of Akron

21 April 2017, 4:25pm, CAS 220

When hobbies overlap: core partitions and Catalan numbers, JP Cossey

University of Akron

24 March 2017, 4:25pm, CAS 220

Sequence 522: Google directions and the stellohedron, Stefan Forcey

University of Akron

17 March 2017, 4:25pm, CAS 220

Automorphisms of elementary abelian-over-cyclic wreath product p-groups part 2, Jeff Riedl

University of Akron

10 March 2017, 4:25pm, CAS 220

Automorphisms of elementary abelian-over-cyclic wreath product p-groups, Jeff Riedl

University of Akron

3 March 2017, 4:25pm, CAS 220

An arrangement of regular n-simplices in certain n-cubes part 3, Patrick Showers

University of Akron

24 February 2017, 4:25pm, CAS 220

An arrangement of regular n-simplices in certain n-cubes part 2, Patrick Showers

University of Akron

17 February 2017, 4:25pm, CAS 220

An arrangement of regular n-simplices in certain n-cubes, Patrick Showers

University of Akron

10 February 2017, 4:25pm, CAS 220

Dirichlet's theorem on primes in arithmetic progression part 2, Stuart Clary

University of Akron

3 February 2017, 4:25pm, CAS 220

Dirichlet's theorem on primes in arithmetic progression, Stuart Clary

University of Akron

27 January 2017, 4:25pm, CAS 220

Mathematical Shibboleths: 10 drawings in 3 steps, Stefan Forcey

University of Akron

9 December 2016, 4:25pm, CAS 220

Automorphisms of finite monolithic groups part 3, Jeff Riedl

University of Akron

2 December 2016, 4:25pm, CAS 220

Automorphisms of finite monolithic groups part 2, Jeff Riedl

University of Akron

18 November 2016, 4:25pm, CAS 220

Automorphisms of finite monolithic groups, Jeff Riedl

University of Akron

11 November 2016, 4:25pm, CAS 220

Euler characteristic of the symmetric group, part 3, JP Cossey

University of Akron

4 November 2016, 4:25pm, CAS 220

Euler characteristic of the symmetric group, part 2, JP Cossey

University of Akron

28 October 2016, 4:25pm, CAS 220

Euler characteristic of the symmetric group, JP Cossey

University of Akron

21 October 2016, 4:25pm, CAS 220D

Semi-extraspecial p-groups, part 3, Mark Lewis

Kent State University

14 October 2016, 4:25pm, CAS 220D

Semi-extraspecial p-groups, part 2, Mark Lewis

Kent State University

7 October 2016, 4:25pm, CAS 220D

Semi-extraspecial p-groups, Mark Lewis

Kent State University

30 September 2016, 4:25pm, CAS 220D

Rational-valued and real-valued characters part 3, Hung Nguyen

University of Akron

23 September 2016, 4:25pm, CAS 220D

Rational-valued and real-valued characters part 2, Hung Nguyen

University of Akron

16 September 2016, 4:25pm, CAS 220D

Rational-valued and real-valued characters, Hung Nguyen

University of Akron

22 April 2016, 3:20pm, CAS 220

Split-facets of the balanced minimal evolution polytope, Logan Keefe

University of Akron

15 April 2016, 3:20pm, CAS 220

Split-facets of the balanced minimal evolution polytope, Stefan Forcey

University of Akron

8 April 2016, 3:20pm, CAS 220

Doubly-invariant subgroups of an abelian 3-group of 3-by-3 matrices, part 3, Jeff Riedl

University of Akron

1 April 2016, 3:20pm, CAS 220

Doubly-invariant subgroups of an abelian 3-group of 3-by-3 matrices, part 2, Jeff Riedl

University of Akron

18 March 2016, 3:20pm, CAS 220

Doubly-invariant subgroups of an abelian 3-group of 3-by-3 matrices, Jeff Riedl

University of Akron

11 March 2016, 3:20pm, CAS 220

Brauer characters of q'-degrees, Dr. Hung Tong-Viet

Kent State University

4 March 2016, 3:20pm, CAS 220

The minimal number of characters in a block of a finite (solvable) group (part 3), JP Cossey

University of Akron

26 Feb. 2016, 3:20pm, CAS 220

The minimal number of characters in a block of a finite (solvable) group (part 2), JP Cossey

University of Akron

19 Feb. 2016, 3:20pm, CAS 220

The minimal number of characters in a block of a finite (solvable) group, JP Cossey

University of Akron

12 Feb. 2016, 3:20pm, CAS 220

Induced characters with equal degree constituents (part 3), Corey Lyons

Kent State University

5 Feb. 2016, 3:20pm, CAS 220

Induced characters with equal degree constituents (part 2), Corey Lyons

Kent State University

29 Jan. 2016, 3:20pm, CAS 220

Induced characters with equal degree constituents, Corey Lyons

Kent State University

11 Dec. 2015, 9:55am, CAS 220

Can symmetries help solve genetic mysteries? (part 2), Dr. Stefan Forcey

University of Akron

20 Nov. 2015, 9:55am, CAS 220

Can symmetries help solve genetic mysteries?, Dr. Stefan Forcey

University of Akron

30 Oct. 2015 9:55am, CAS 220

The geometry of the Mathieu groups, part 2 Dr. Hung Nguyen

University of Akron

23 Oct. 2015 9:55am, CAS 220

The geometry of the Mathieu groups Dr. Hung Nguyen

University of Akron

16 Oct. 2015 9:55am, CAS 220

Class-preserving automorphisms of groups part 3, Jeff Riedl

University of Akron

9 Oct. 2015 9:55am, CAS 220

Class-preserving automorphisms of groups part 2, Jeff Riedl

University of Akron

2 Oct. 2015 9:55am, CAS 220

Class-preserving automorphisms of groups, Jeff Riedl

University of Akron

25 Sept. 2015 9:55am, CAS 220

Nilpotent blocks of solvable groups part 2, JP Cossey

University of Akron

18 Sept. 2015 9:55am, CAS 220

Nilpotent blocks of solvable groups, JP Cossey

University of Akron

1 May 2015, 3:30pm, CAS 220

p-Parts of character degrees, HP Hung Tong-Viet

University of Pretoria

24 April 2015, 3:30pm, CAS 220

Phylogenetics and Polytopes part 2, Dr. Stefan Forcey

University of Akron

17 April 2015, 3:30pm, CAS 220

Phylogenetics and Polytopes, Dr. Stefan Forcey

University of Akron

20 March 2015, 3:30pm, CAS 220

Doubly-invariant subgroups of a finite additive abelian p-group of matrices, Dr. Jeff Riedl

University of Akron

6 March 2015, 3:30pm, CAS 220

Binomial forms of minimal height, Lubjana Beshaj

Oakland University

27 February 2015, 3:30pm, CAS 220

An extension of Thompson's character degree theorem, part 3, Dr. Hung Nguyen

University of Akron

20 February 2015, 3:30pm, CAS 220

An extension of Thompson's character degree theorem, part 2, Dr. Hung Nguyen

University of Akron

13 February 2015, 3:30pm, CAS 220

An extension of Thompson's character degree theorem, Dr. Hung Nguyen

University of Akron

6 February 2015, 3:30pm, CAS 220

Brauer graphs of the symmetric group part 3, Dr. JP Cossey

University of Akron

30 January 2015, 3:30pm, CAS 220

Brauer graphs of the symmetric group part 2, Dr. JP Cossey

University of Akron

23 January 2015, 3:30pm, CAS 220

Brauer graphs of the symmetric group, Dr. JP Cossey

University of Akron

21 November 2014, 3:15pm, CAS 220

Codegrees and nilpotence class of p-groups, Dr. Mark Lewis

Kent State University

14 November 2014, 3:15pm, CAS 220

Ratios of character counts in the symmetric group and related combinatorics, part 2, Dr. JP Cossey

University of Akron

7 November 2014, 3:15pm, CAS 220

Tridiagonal pairs and the quantum enveloping algebra Uq(sl2), Dr. Sarah Bockting-Conrad

Oberlin College

31 October 2014, 3:15pm, CAS 220

Ratios of character counts in the symmetric group and related combinatorics, Dr. JP Cossey

University of Akron

24 October 2014, 3:15pm, CAS 220

Routes, schedules, and genetic histories: using polytopes to find optimal solutions, part 3, Dr. Stefan Forcey

University of Akron

17 October 2014, 3:15pm, CAS 220

Routes, schedules, and genetic histories: using polytopes to find optimal solutions, part 2, Dr. Stefan Forcey

University of Akron

10 October 2014, 3:15pm, CAS 220

Routes, schedules, and genetic histories: using polytopes to find optimal solutions, Dr. Stefan Forcey

University of Akron

26 September 2014, 3:15pm, CAS 220

The largest character degrees of the symmetric and alternating groups, part 3, Dr. Hung Nguyen

University of Akron

12 September 2014, 3:10pm, CAS 220

The largest character degrees of the symmetric and alternating groups, part 2, Dr. Hung Nguyen

University of Akron

5 September 2014, 3:10pm, CAS 220

The largest character degrees of the symmetric and alternating groups, Dr. Hung Nguyen

University of Akron

10 April 2014, 1:45pm, Olin 105

Conjugacy class sizes of the symmetric groups, Cavan Dickson

University of Akron

20 March 2014, 1:45pm, Olin 105

The cyclic sieving phenomenon, part 3, Dr. JP Cossey

University of Akron

13 March 2014, 1:45pm, Olin 105

The cyclic sieving phenomenon, part 2, Dr. JP Cossey

University of Akron

6 March 2014, 1:45pm, Olin 105

The cyclic sieving phenomenon, Dr. JP Cossey

University of Akron

20 February 2014, 1:45pm, Olin 105

Orbit sizes for finite groups having an extraspecial normal subgroup of odd order, part 4, Dr. Jeff Riedl

University of Akron

13 February 2014, 1:45pm, Olin 105

Orbit sizes for finite groups having an extraspecial normal subgroup of odd order, part 3, Dr. Jeff Riedl

University of Akron

6 February 2014, 1:45pm, Olin 105

Orbit sizes for finite groups having an extraspecial normal subgroup of odd order, part 2, Dr. Jeff Riedl

University of Akron

30 January 2014, 1:45pm, Olin 105

Orbit sizes for finite groups having an extraspecial normal subgroup of odd order, Dr. Jeff Riedl

University of Akron

14 November 2013, 1:00pm, CAS 220

Sufficient conditions for solvability and nilpotency in terms of character degrees, part 2, Dr. Hung Nguyen

University of Akron

7 November 2013, 1:00pm, CAS 220

Sufficient conditions for solvability and nilpotency in terms of character degrees, Dr. Hung Nguyen

University of Akron

3 October 2013, 1:00pm, CAS 220

Large orbit theorems, their applications, and related questions in finite group theory, part 3, Dr. JP Cossey

University of Akron

26 September 2013, 1:00pm, CAS 220

Large orbit theorems, their applications, and related questions in finite group theory, part 2, Dr. JP Cossey

University of Akron

19 September 2013, 1:00pm, CAS 220

Large orbit theorems, their applications, and related questions in finite group theory, Dr. JP Cossey

University of Akron

12 September 2013, 1:00pm, CAS 220

Determinants and truth values, part 2, Dr. Stefan Forcey

University of Akron

5 September 2013, 1:00pm, CAS 220

Determinants and truth values, Dr. Stefan Forcey

University of Akron

18 April 2013, 2:00pm, CAS 220

Commutator calculus for finite wreath product groups, part 3, Dr. Jeffrey Riedl

University of Akron

11 April 2013, 2:00pm, CAS 220

Commutator calculus for finite wreath product groups, part 2, Dr. Jeffrey Riedl

University of Akron

4 April 2013, 2:00pm, CAS 220

Commutator calculus for finite wreath product groups, Dr. Jeffrey Riedl

University of Akron

14 March 2013, 2:00pm, CAS 220

Tubes and Trees: When is a poset a polytope?, part 2, Dr Stefan Forcey

University of Akron

12 March 2013, 4:30pm, Crouse 311

Sdiv Marriages, Dr Jenya Supranova

Kent State University

7 March 2013, 2:00pm, CAS 220

Tubes and Trees: When is a poset a polytope?, Dr Stefan Forcey

University of Akron

28 February 2013, 2:00pm, CAS 220

Quasi-simple groups and their complex group algebras, part 3, Dr Hung Nguyen

University of Akron

21 February 2013, 2:00pm, CAS 220

Quasi-simple groups and their complex group algebras, part 2, Dr Hung Nguyen

University of Akron

14 February 2013, 2:00pm, CAS 220

Orders of perfect groups with dihedral involution centralizers, Michael Strayer

University of Akron

7 February 2013, 2:00pm, CAS 220

Quasi-simple groups and their complex group algebras, Dr Hung Nguyen

University of Akron

31 January 2013, 2:00pm, CAS220

Liebeck and Shalev's result on the zeta function of the symmetric group, part 2, Dr. JP Cossey

University of Akron

24 January 2013, 2:00pm, CAS220

Liebeck and Shalev's result on the zeta function of the symmetric group, Dr. JP Cossey

University of Akron

6 December 2012, 12:05pm, CAS 220

An elementary proof of the hook length formula, part 2, Dr. JP Cossey

University of Akron

29 November 2012, 12:05pm, CAS 220

An elementary proof of the hook length formula, Dr. JP Cossey

University of Akron

25 October 2012, 12:05pm, CAS 220

The Witten zeta function encoding conjugacy class sizes of finite groups, Dr. Hung Nguyen

University of Akron

4 October 2012, 12:00pm, CAS 220D

Iwahori-Hecke Algebras: S_n, A_n, B_n (and beyond?), Part 2, Dr. J.P. Cossey

Department of Mathematics, The University of Akron

27 September 2012, 12:00pm, CAS 220D

Iwahori-Hecke Algebras: S_n, A_n, B_n (and beyond?), Dr. J.P. Cossey

Department of Mathematics, The University of Akron

13 September 2012, 12:00pm, CAS 220D

An introduction to p-adic numbers, part 2, Dr. Jeff Riedl

Department of Mathematics, The University of Akron

6 September 2012, 12:00pm, CAS 220D

An introduction to p-adic numbers, Dr. Jeff Riedl

Department of Mathematics, The University of Akron

1 March 2012, 2:00pm, CAS 220D

Free Gerstenhaber-Voronov Algebras, Dr. Maria Ronco

Department of Mathematics and Physics, University of Talca, Chile

16 February 2012, 2:00pm, CAS 220D

p-Regular and Fayers Partitions, Dr. J. P. Cossey

Department of Mathematics, The University of Akron

26 January 2012, 2:00pm, CAS 220D

Bounding the largest irreducible representation degree in terms of smaller degrees in the classical groups, Dr. Hung Nguyen

Department of Mathematics, The University of Akron

### PME/SIAM talks, Career talks and other Seminars

The UA SIAM Student Chapter will host Dr. Daniel Munther, an Assistant Professor of Mathematics at Cleveland State University, Friday April 6th 2018 at 3:30pm in Crouse 209.

Title: Mechanistic dose-response modeling for Listeria monocytogenes: a new perspective for risk assessment

The UA SIAM Student Chapter will host Dr. Pat Wilber, UA math professor, on Thursday November 30th 2017 at 3:00pm in JAR 151.

Title: An Elastica Model that Describes the Buckling of Cross-sections of Multi-walled Nanotubes

The UA SIAM Student Chapter will host Paul Stager, a UA math alumnus and current director of engineering at CISCO, on Friday November 10th 2017 at 3:15pm in Leigh Hall 306. In his talk, Paul will give some insight into software defined networks (SDN), wireless security, wireless location, and work-flow analytics that require machine learning and data analytics, and numerically efficient solutions to non-linear systems of equations.

On Thursday March 9th 2017 at 4pm, the UA SIAM student chapter seminar will present Daniel Rhoads, a PhD student in Engineering Applied Mathematics at UAkron and NASA Fellow. Dan will talk about "Investigation of Carbon Fiber Architecture in Braided Composites Using X-Ray CT Inspection."

16 February 2017 4pm in Olin 107, Shawn Ryan, Department of Mathematics at Cleveland State. "Collective Dynamics in Active Biological Systems"

14 November 2016, 3:15pm, LH 414

Dealing with Missing Values and Imbalanced Data in Predictive Modeling

Chien-Chung Chan, Professor in the Department of Computer Science at The University of Akron

11 November 2016, at 4:30pm, CAS 138

From Akron to Silicon Valley, Mathematics Provides Opportunities

Michael Wransky, UAkron Math Department Alumnus

11 March 2016, 3:30pm, LH 312

What does a mathematician do at a car insurance company?

David Martin, Chief Data Scientist at ROOT.

11 Sept. 2015, 1:30pm, SHN 354

Working at Applied Vision

Jacob Trombetta

26 February 2015, 3:30pm, CAS 139

Dave Johnson, chief scientist at Michigan Aerospace

Spring 2015 Career seminar series

2 October 2014, 3:00pm, Schrank North 359

Actuarial Careers, Rudy Palenik

Casualty Actuarial Society.

22 January 2013, 3:30pm, LH 305

Existence, nonexistence and optimal decay of solutions to nonlinear Choquard equations, Dr. Vitaly Moroz

Swansea University, UK

15 October 2012, 2:30pm, CAS 143

Coagulation dynamics of uniform growth and random shock waves, Dr. Bob Pego

Carnegie Mellon University

18 October 2012, 2:30pm, CAS 136

Gamma convergence for pattern forming systems with competing interactions, Dr. Cyrill Muratov

Department of Mathematics, New Jersey Institute of Technology

20 September 2012, 4:30pm, CAS 107

Multilevel methods for image deblurring, Dr. Malena Espanol

Department of Mathematics, The University of Akron

4 September 2012, 4:30pm, Olin 119A

Asymptotic behavior of critical points of an energy involving a circular-well potential, Dr. Itai Shafrir

Israel Institute of Technology (Technion)

8 March 2012, 4:00pm, CAS 107

On the energy of the current vector of a complex valued function in R^3, Dr. Alberto Montero

Department of Mathematics, Pontificia Universidad Catolica de Chile

9 February 2012, 4:00pm, LH 311

Hilbert-Samuel Polynomials, Dr. Lori McDonnell

Department of Mathematics, Ashland University

6 February 2012, 4:00pm, CAS 142

The Rubik's Cube in Twenty Moves, Dr. Morley Davidson

Department of Mathematics, Kent State University

27 January 2012, 4:05pm, CAS 142

Homogenization of Random Structures, Dr. Victor Berdichevsky

Department of Mechanical Engineering, Wayne State University

## Announcements for Spring 2024

- SIAM meetings in CAS 240, on alternating Wednesdays (check calendar) at 5pm, starting TBA. Anyone can join the student organization SIAM
- Jan. 24, 2024, CAS room 240 at 5pm. We will be playing Back-to-Back.
- Applications now being taken for the math honor society PME: Pi Mu Epsilon application .
- Seminars and Colloquia in algebra, combinatorics and PDE's.

##### Calendar

Fall 2022, Spring 2023, Fall 2023

- RooFest: Aug. 27, 2023
- Welcome meeting Sep 6, 2023: pizza, snacks and games!
- Movie night, Sep 20, 2023: snacks and popcorn!
- Research talk, Nov 8, 2023: Dr. Andreas Aristotelous: Title: "Modeling immune responses to biofilm and viral infections” Description: We introduce mathematical modeling frameworks to study microbial interactions and infections. Firstly, we present a model that captures the dynamics of biofilm volume fraction, oxygen concentration, and the diffusive spread of virulence factors, such as toxins. This model, studied both in 1D and 2D contexts, offers insights into the complex interplay between oxygen, toxins, neutrophils, and bacteria, highlighting scenarios leading to either infection elimination or its transformation into a chronic state. Secondly, we briefly present a lattice-based hybrid discrete continuum approach tailored for understanding SARS-CoV-2 exposure and infection progression within the human lung's alveolar region.
- Jan 25, 2023: Speaker: Stefan Forcey. The topic is: Mysteries of the Mandelbrot set!
- Feb 8, 2023: Movie night: The man who knew infinity.
- Feb 23, 2023: Math Bingo.
- March 14, 2023: Pi day celebration.
- April 25, 2023: End of year dinner.
- Fall picnic: Sand Run metro park Mingo Lodge, Oct. 21.

- SIAM meeting Oct. 6: Dr. Pat Wilber.

Title: Relaxed Moire Patterns in Bilayer Graphene

Abstract: In this talk, I will start by explaining what graphene is and why graphene is interesting from the point of view of materials science. I will also explain what a moire pattern is. I will then introduce the idea of a relaxed moire pattern in a bilayer of graphene. To understand relaxed moire patterns, some of the basic mechanics of interacting graphene layers will be discussed. Finally, I will talk about a research problem I worked on recently that is motivated by explaining and predicting relaxed moire patterns in bilayer graphene. - Sept 15 SIAM meeting: Dr. Dane Quinn, on Population models.

Spring 2021

- Dr. Alex Hoover of UA Math who will present a live virtual talk on " The Emergence of Neuromechanical Wave Resonance in Jellyfish Swimming.” A brief abstract is provided below. Please join us. Use the link in the calendar to access the presentation.

IB and Biology Colloquium

Abstract: In order for an organism to have a robust mode of locomotion, their neuromuscular organization must be adaptable in a changing environment. In jellyfish, the activation and release of muscular tension is governed by the interaction of pacemakers with the underlying motor nerve net that communicates with the musculature. This set of equally-spaced pacemakers, located at bell rim, alter their firing frequency in response to environmental cues, forming a distributed mechanism to control the bell's muscular contraction. In this talk, we explore the control of medusan neuromuscular activation in with a model jellyfish bell immersed in a viscous fluid and use numerical simulations to describe the interplay between active muscle contraction, passive body elasticity, and fluid forces. This model is then used to explore the interplay between the speed of neuromechanical activation, fluid dynamics, and the material properties of the bell, and we use it to discover the presence of an entirely new phenomena known of neuromechanical wave resonance, which has many potential applications for the actuation soft-body robotics and tissue-engineered pumps. - Dr. Lingxing Yao, assistant professor of mathematics, UA. The title and talk abstract are below, and the seminar will begin at 245p. You will be able to join the meeting as early as 230p.
- A model system and its simulations for cell migration
- In this presentation, we introduce a mathematical model system for cell dynamics, which includes cell membrane, transmembrane osmotic water flow, actomyosin network polymerization/depolymerization. The features of the model can be organized into three main modules: 1) An osmotically active solute obeys an advection-diffusion equation in a region demarcated by a deformable membrane. 2) The interfacial membrane allows transmembrane water flow which is determined by osmotic and mechanical pressure differences across the membrane. 3) An actin network is constantly undergoing polymerization/depolymerization (with or without myosin contraction) and interacting with the cell membrane. To numerically compute solutions of the model, we also develop a numerical framework, which is based on an immersed boundary method for fluid-structure interaction and a Cartesian grid embedded boundary method for the solute and actomyosin network. Using the model system, we can explore different mechanisms and key biological factors that drive cell migration. We will demonstrate the model system with biological studies in cells, including migrations driven in different physiological conditions and the energy expenditure in migrations.
- The work on developing model equations and numerical method is in collaboration with Dr. Yoichiro Mori at the U. Penn. The modeling and applications in cell migrations are joint work with Dr. Yizeng Li (at Kennesaw State), Dr. Yoichiro Mori, and Dr. Sean Sun (at Johns Hopkins).
- Nov. 14, 2019, 4:15 in CAS 139. Buckling Problems Motivated by Bilayer Graphene and other Layered Materials, a talk from Dr. Pat Wilber.
- Oct. 21, 2019, 4:15 in CAS 139. Using five dimensions to identify a first cousin once removed: Phylogenetic Polytopes, a talk from Dr. Stefan Forcey.
- Sept. 19, 2019, 4:15pm in CAS 139. From Nerve Net to Vortex Ring: A Computational Modeling Approach to Medusan Biomechanics, a talk from Dr. Alex Hoover.
- The fall picnic was held Friday, October 11, 2019, 5:30 pm: The annual fall picnic at Sand Run Park Mingo Lodge (map) was hosted by the math student groups: PME, WIM and SIAM.
- Tutoring Hours TBA in the CAS second floor atrium (turn left after exiting the elevator). For students of Algebra for Calculus, Precalculus, Calculus with Business Applications, Calculus I, II and III
- April 5 and 6, 2019. We hosted the Spring Meeting of the Ohio Section of the Mathematical Association of America. Starting 1:15pm Friday April 5. For schedule and locations of talks and events, see the conference page.
- Representatives from Search Discovery, a data analytics consulting agency, will be on campus this Friday 4/5/2019 to give a presentation entitled

"Intro to Data Analytics & Marketing Consulting: Academia to Industry."

Learn about applying your education to analytics and marketing in the real world.

The presentation will be given by

Andrew Ash, Data Engineer Rachel Starvaggi, Digital Marketing Analyst Alex Fitzpatrick, Digital Marketing Analyst Julie Shallman, Analytics Analyst

The presentation will be held in CAS142 on Friday April 5th 2019 from 11-12. - Thanks for a great 2019 Mathematics Banquet, hosted by the student organizations WIM, SIAM and PME, at 6:00 pm on the evening of Friday, April 26th, 2019 in room A of the Quaker Plaza. All are invited!
- Colloquium: Scott Schueller will speak on "Careers as a Quantitative Analyst: Math + Stats + Coding + Finance = Quant."

Friday, March 8, 2019

11:00 a.m. – 12:00 p.m.

CAS room 134 - Engineering Talk: Thursday 3/7/2019 3pm-4 ASEC 122

Carianne Martinez

"Machine Learning Applications at Sandia National Laboratories" - Research Talk: Thursday 3/7/2019 3:45pm-4:45 CAS 135

Hung Nguyen

"From Symmetry to Group Theory and Representation Theory"

Fall 2019

Spring 2019