Discrete Mathematics at ISU (DISCMATH)

The Mathematics Department at Illinois State University (ISU) has a strong Discrete Mathematics Group. The group, usually called DISCMATH for brevity, is very active in research and professional service, as well as providing enthusiastic and dedicated teaching for students at master’s level and all undergraduate levels.

The DISCMATH group convenes a regular weekly seminar program, which runs throughout the Fall and Spring semesters and logs around 20-30 talks each academic year. Meetings last 50 minutes, followed by a 20 minutes informal social gathering. Most talks report on recent results or research in progress, but occasional expository and survey talks are included. Speakers usually are ISU faculty members of DISCMATH, but also include graduate students, invited speakers from other institutions, and visitors to the ISU Mathematics Department (often the Department hosts one or more longer term visitors in Discrete Mathematics).

Discrete Mathematics Seminar

For the Fall 2018 semester, the talks are given on Thursdays, 2:00 p.m.-2:50 p.m., in Stevenson Hall (Room STV 136B). Immediately after the seminar, all participants are invited to room 313 D in Stevenson Hall for 20 minutes of social get-together, coffee or tea, and cookies. Follow the links below for further information on specific talks. If you want to give a talk, please send an email to mbahman[at]ilstu[dot]edu.

Schedule


Fall 2018


Fall 2018

Date Speaker Title
September 6 Papa Sissokho (ISU) Direct Subspace Packings and Covering Codes
September 13 Michael Plantholt (ISU) A Graph Decomposition Question and Generalized Derangements
September 27 Songling Shan (ISU) Hamiltonian cycles in tough P2 U P3-free graphs
October 4 Charles Vanden Eynden (ISU) Counting Clicking Orbits of Uniform Hypergraphs
October 11 Daniel Roberts (IWU) Problems that Defy Computation
October 18 Saad El-Zanati (ISU) On maximum packings of the complete λ-fold 3-uniform hypergraph with isomorphic loose 3-cycles
October 25 Amin Bahmanian (ISU) Resolvable cycle decompositions of complete multigraphs and complete equipartite multigraphs via layering and detachment
November 1 Colloquium, STV 401, 1:30 - 2:30 Bruce Berndt (U of I) Living with Ramanujan for Forty Years
November 8 Amin Bahmanian (ISU) Connected Fair Detachments of Hypergraphs
November 15 Jordan Dulowski (ISU) On the Spectrum Problem for the Orientations of the 6-Cycle
  Cody Hatzer, Kristin Koe (ISU) On Decompositions of Complete 3-Uniform Hypergraphs into Loose 4-Cycles

Spring 2018


Spring 2018

Date Speaker Title
February 1 Sadegheh Haghshenas (ISU) Extending Edge-Colorings into Regular Colorings
February 8 Uğur Odabaşi Some Problems on Cycle Decompositions
February 15 Saad El-Zanati(ISU) On the spectrum problem for the connected cubic graphs of order at most 10
February 22 Amin Bahmanian (ISU) On an extremal edge-coloring problem
March 1 Papa Sissokho (ISU) Subspace Partitions of Fqn containing direct sums
March 22 Mikhail P. Lavrov (UIUC) Distance-uniform graphs with large diameter
March 29 Andrew Shallue (IWU) The search for pseudoprimes
April 5 Dan Roberts (IWU) Decompositions of complete multigraphs into small-order multigraphs
April 12 Amin Bahmanian (ISU) Latin Cubes
April 19 Michael Plantholt (ISU) Progress on the Overfull Conjecture
April 26 Andre Raspaud (LaBRI, Bordeaux University, France) Colorings of signed graphs - a short survey

Fall 2017


Fall 2017

Date Speaker Title
September 7 Amin Bahmanian (ISU) Solving Higher Dimensional Sudokus
September 21 Mike Plantholt (ISU) On Decomposition of Regular Bipartite Graphs into Small Paths
October 5 Sadegheh Haghshenas (ISU) Embedding Factorizations for 4-uniform hypergraphs
October 19 Dan Cranston (Virginia Commonwealth University) Edge-coloring of Graphs and Multigraphs
November 2 Papa Sissokho (ISU) Partial t-spread over finite vector spaces: A graph theoretical interpretation
November 16 Saad El-Zanati (ISU) On Rosa-Type Labelings of Graphs and Hypergraphs
November 30 TBA TBA

Fall 2014


Fall 2014

  • Meeting 3 (Thursday, April 3, 2014): Shailesh Tipnis (Illinois State University), The complexity of some old and some new results on decompositions of graphs into small paths.
  • Meeting 4 (Thursday, March 27, 2014): Sunil Chebolu (Illinois State University), Mersenne Primes, Riemann Hypothesis, and Circulant Graphs.
  • Meeting 4 (Thursday, March 20, 2014): Lucian Ionescu (Illinois State University), An algebraic approach to p-adic numbers
  • Meeting 3 (Thursday, March 6, 2014): Mike Plantholt (Illinois State University), Decomposition of regular graphs into a union of two stars
  • Meeting 2 (Thursday, February 27, 2014): Charles Vanden Eynden (Illinois State University), The p-adic numbers (Part II)
  • Meeting 1 (Thursday, February 14, 2014): Charles Vanden Eynden (Illinois State University), The p-adic numbers (Part I)