The following are changes made to the program since the program booklet was printed. This list will be updated daily through the end of the meeting.

**New Day/Time/Session: Troy V Banks,**AMS Contributed Paper Session on Order, Lattices, and Logic, was originally scheduled to present at 8:45 a.m. on Saturday in the AMS Contributed Paper Session on Linear Algebra and Algebraic Geometry.__On the structure of a class of Hankel-like Positive Definite Kernels,__**will now present at 10:15 a.m.**in the**New Affiliation:****Samit Dasgupta**, organizer of the**AMS Special Session on New Directions in the Theory of Complex Multiplication,**is*now affiliated with Duke University*(sessions also on Thursday morning).**New Day/Time/Session: Radoslav Dimitric,**in the AMS Contributed Paper Session on Group Theory and Generalizations, was originally scheduled to present at 1:00 p.m. on Saturday in the AMS Contributed Paper Session on Commutative Algebra.__Slenderness program.__**will now present at 10:00 a.m.****Panelist Change:***MAA Panel:*2:15 –3:35 p.m.,*Mental Health in the Mathematics Profession*,**Rachel Levanger**will no longer be on this panel.**New Time:****Hieu D Nguyen,**__Partitions of Steiner Equiangular Tight Frames,__*will now present at 2:45 p.m.*MAA General Contributed Paper Session on Analysis, was originally scheduled to present at 6:15 p.m.

**Jiahan Du****,***On the rank of matrix multiplication tensors of medium size.*__.__AMS Contributed Paper Session on Computer Science , at 9:30 a.m.__,__**William Mahavier,**MAA Contributed Paper Session on Discrete Mathematics in the Undergraduate Curriculum - Ideas and Innovations in Teaching, II, at 3:35 p.m.__Discrete Mathematics as a Potential Gateway Course.,__**Mercedes A. McGowen,**MAA Contributed Paper Session on Touch it, Feel it, Learn it: Tactile Learning Activities in the Undergraduate Mathematics Classroom, I at 8:40 a.m.__Developing more robust mathematical understanding utilizing manipulatives and variations of a single problem,__**Gaurav Mendiratta****,**__Modeling cell-cell interaction based pattern generation by Notch pathway,__*AM*S Special Session on Recent Advancements in Mathematical Modeling of Cancer, II at 5:15 p.m.**Thomas Osler**,__An unexpected random walk.__MAA General Contributed Paper Session on Analysis, at 2:45 p.m.__,__**Ian Pierce,**MAA Contributed Paper Session on Undergraduate Student TAs in Mathematics, at 4:55 p.m.__A Teaching Practicum Course at the United States Air Force Academy,__**J. Diego Ramirez,**MAA General Contributed Paper Session on Analysis, at 2:15 p.m.__Existence of minimal and maximal solutions for Caputo fractional differential equations with bounded delay.,__**Cameron Williams,***Coupled Supersymmetries and Associated Fourier-Like Transforms: New Generalizations of the Quantum Harmonic Oscillator and Fourier Transform.*AMS Contributed Paper Session on Functional Analysis, at 4:15 p.m.__,__

**Panelist Change:***National Association of Mathematicians (NAM) and the National Security Agency (NSA) Special Presentation: Town Hall Meeting on the Status of the African Diaspora in the Mathematical Sciences,*5:30 – 7:00 p.m.*,***Robin Wilson**will no longer be on this panel.**Michael Young**, Iowa State University, will now join the panel.**Date Change: SIGMAA on Mathematical Knowledge for Teaching Business Meeting**has been moved from Friday at 6:30 p.m. to Thursday at 6:30 p.m. The location for this meeting, Room 340, BCC, remains unchanged.**New Day/ New Room:**SIGMAA on Mathematical and Computational Biology (BIO SIGMAA) Reception and Business Meetingin Room 303, BCC to Thursday at 6:00 p.m. in Room 302, BCC.**has been moved from Friday at 6:00 p.m.****New Day/ New Room:**SIGMAA on Mathematical and Computational Biology Guest Lecturein Room 303, BCC to Thursday at 7:00 p.m. in Room 302, BCC.*has been moved from Friday at 7:00 p.m.***New Day/Time/Session:****Dipendra Regmi,**AMS Contributed Paper Session on Partial Differential Equations, III was originally scheduled at 5:15 p.m. on Friday in AMS Contributed Paper Session on Partial Differential Equations, IV.__The 2D magneto-micropolar equations with partial dissipation,__**will now present at 3:15 p.m.**

**Thir Dangal,**__Localized method of particular solutions with polynomial basis functions.__AMS Contributed Paper Session on Partial Differential Equations, III, at 1:15 p.m.__,__**Neil Jerome Egarguin,**__Active Control of Acoustic Fields using Almost Non-Radiating Sources.__AMS Contributed Paper Session on Partial Differential Equations, III, at 2:15 p.m.__,__**Brent Holmes,**__Higher Nerves of Simplicial Complexes.__AMS Special Session on Recent Advances in Homological and Commutative Algebra, II, at 3:30 p.m.__,__**Carmen A Iasiello,**AMS Special Session on Agent-based Modeling in Biological and Social Systems (a Mathematics Research Communities Session), II at 2:30 p.m.__Uses of Agent Based Modeling for Social Science Hypothesis Development.__**Mutasim Mim,**__On a generalization of Wilson's Theorem__*.*AMS Special Session on Research in Mathematics by Early Career Graduate Students, I at 9:30 a.m.**Tracy Morris**,MAA Poster Session: Projects Supported by the NSF Division of Undergraduate Education at 2:00 p.m.__Transforming Undergraduate Statistics Education at Primarily Undergraduate Institutions through Experiential Learning.__**Eric Platt,**__On the active control of Helmholtz Fields on mutually disjoint exterior domains.__AMS Contributed Paper Session on Partial Differential Equations, III, at 2:30 p.m.__,__**Caylah Retz,**AMS Contributed Paper Session on Numerical Analysis, I at 2:45 p.m.__Accurate and Efficient Calculation of Singular Electrostatic Potentials in Charge-Dielectric Spherical Systems.__

**New Affiliation: Edray Goins**, organizer of the**Haynes-Granville-Browne Session of Presentations by Recent Doctoral Recipients in the Mathematical Sciences**, is now affiliated with Pomona College.**New Day:**SIGMAA on Mathematical Knowledge for Teaching Business Meeting has been moved from Friday at 6:30 p.m. to Thursday at 6:30 p.m. The location for this meeting, Room 340, BCC, remains unchanged.**New Day/Time/Session: Zach Bailey,**__Some Inverse Problems For Hyperbolic Partial Differential Equations.____,__*will now present at 6:00 p.m. on Friday in the AMS Contributed Paper Session on Partial Differential Equations, IV, was originally scheduled to present at 9:45 a.m. on Thursday in the AMS Contributed Paper Session on Partial Differential Equations, II.***New Time/Session: Xiaokai Huo,**__Euler flows for multicomponent fluids.__will now present at 9:30 a.m. in the AMS Special Session on Mathematical Analysis in Fluid Dynamics, was originally scheduled to present at 4:00 p.m. in the AMS Contributed Paper Session on Partial Differential Equations, IV.__,__**New Day/Time/Session: Douglas B. Meade,**__MYMA Calculus: An Active and Interactive Approach to Learning and Doing Calculus,__*will now present 10:15 a.m.*MAA General Contributed Paper Session on Teaching and Learning Calculus, I, was originally scheduled to present at 3:45 p.m. on Saturday,*in*MAA General Contributed Paper Session on Teaching and Learning Calculus, II.**New Day/ New Room:**SIGMAA on Mathematical and Computational Biology (BIO SIGMAA) Reception and Business Meeting (see Program Changes: Thursday, January 17).**New Day/ New Room:**SIGMAA on Mathematical and Computational Biology Guest Lecture (see Program Changes: Thursday, January 17).

**Rachel V Barber,**AMS Contributed Paper Session on Combinatorics and Graph Theory, I, at 8:30 a.m.__When Graphs are Wreath Products,__**Renee Brady,**AMS Special Session on If You Build It They Will Come: Presentations by Scholars in the National Alliance for Doctoral Studies in the Mathematical Sciences, I, at 8:30 a.m.__Optimizing docetaxel scheduling to delay progression in metastatic prostate cancer patients receiving hormone therapy,__**Saikat Das,**AMS Special Session on Geometric and Topological Generalization of Groups, II, at 2:00 p.m.__Thickness of \text{Out}(A1∗...∗An).,__**Karoline Disser,**__Analysis of fluids with non-smooth viscosities.__AMS Special Session on Mathematical Analysis in Fluid Dynamics, I, at 9:30 a.m.__,__**Kseniya Klyachko,**__Random Processes of the Form Xn+1=AXn+Bn (mod p).____,__**Oliver T.B. Meldrum**,__Maximizing the number of vertices of the d-cube that can be covered by a ball of given radius.__MAA General Contributed Paper Session on Geometry, at 4:45 p.m.__,__**Rachael M. Norton,**__A Nevanlinna-Pick theorem in the context of the weighted Hardy algebra over a W∗-correspondence.__**Tin Phan,**AMS Contributed Paper Session on Mathematics in the Life Sciences, Ecology, and Related Fields, I at 9:30 a.m.__Differences in Transcriptional Dynamics Between T-cells and Macrophages as Determined by a Three-State Mathematical Model.__**Maya Schwartz,**__The Combinatorics of SET (the card game).__MAA Contributed Paper Session on It's Circular: Conjecture, Compute, Iterate, at 2:20 p.m.__,__**Jayleen L. Wangle,**MAA Contributed Paper Session on Research in Undergraduate Mathematics Education (RUME), IV-the Teaching and Learning of Calculus, at 3:20 p.m.__An APOS Analysis of Calculus Student Comprehension of Continuity and Related Topics,__

**Panelist Change:** **NAM Panel Discussion: NAM 2019-2069*** : Where Do We Go from Here?, *9:00 - 9:50 a.m.,

**Amin Bahmanian****,**__Embedding Partial Latin Cubes.__AMS Contributed Paper Session on Combinatorics and Graph Theory, IV,__,__**Jing Hao****,***Weight distribution of quasi-quadratic residue codes.*AMS Contributed Paper Session on Combinatorics and Graph Theory, IV,__,__**Anna-Sophie Heinemann,**, AMS-MAA-ICHM Special Session on History of Mathematics, III, at 1:00 p.m.__De Morgan on Barrett and Tetens: a British-Continental analogy in the history of statistic thinking?__**Maria Teresa Hernandez,**AMS Contributed Paper Session on Ordinary Differential Equations, at 1:15 p.m.__Fitting Classical Mathematical Models to Small Data Sets from Lewis Lung and Human Breast Carcinomas,__**Manoj Lamichhane,**AMS Special Session on Group Representation Theory and Character Theory, II at 2:00 p.m.__Minimal representations of Lie algebras with non-trivial Levi decomposition,__**Mitch Phillipson,**__Non-Crossing Matchings on Words with Restricted Bonding Conditions.____,__