## 2020 Seminars

## Applied and Computational Mathematics Seminars

Fri Jan 17 , 2:30pm Yuanwei Qi University of Central Florida | Traveling Wave of Gray-Scott System: Results and Perspective |

Fri Jan 31 , 2:30pm Xiangcheng Zheng University of South Carolina | Mathematical and numerical analysis to variable-order mobile-immobile time-fractional diffusion equations |

Fri Feb 21 , 2:30pm Hailiang Liu Iowa State University | Efficient, positive, and energy stable schemes for Poisson-Nernst-Planck systems |

## Discrete/Combinatorics Seminars

Fri Jan 24 , 2:30pm Inne Singgih University of South Carolina | Diameter of 3-colorable graphs |

Fri Jan 31 , 2:30pm Garner Cochran Berry College | A bound on the oriented diameter of graphs given minimum degree and girth |

Fri Feb 07 , 2:30pm Joshua Cooper University of South Carolina | Around the Brouwer Conjecture |

Fri Feb 14 , 2:30pm Gábor Hetyei University of North Carolina, Charlotte | The number of partitions of a fixed genus |

Fri Feb 21 , 2:30pm David Galvin Notre Dame University | Total non-negativity of some combinatorial matrices |

Fri Feb 28 , 2:30pm Joshua Cooper University of South Carolina | Around the Brouwer Conjecture, Part II |

Fri Mar 06 , 2:30pm Trevor Olsen University of South Carolina | Wiener Index in Triangulations and Quadrangulations |

Fri Aug 28 , 2:30pm Joshua Cooper University of South Carolina | Around the Brouwer Conjecture, Part III: Failure for Signed Graphs |

Fri Sep 04 , 2:30pm Alex Neal Riasanovsky Iowa State University | On the edit distance function of random graphs |

Fri Sep 11 , 2:30pm He Guo Georgia Institute of Technology | Packing nearly optimal Ramsey R(3,t) graphs |

Fri Sep 18 , 2:30pm Ryan Martin Iowa State University | Splits with Forbidden Graphs |

Fri Sep 25 , 2:30pm Alexander Wiedemann Davidson College | The restricted numerical range of the digraph Laplacian |

Fri Oct 02 , 2:30pm David Galvin Notre Dame University | Independent set permutations and matching permutations |

Fri Oct 09 , 2:30pm Austin Mohr University of Nebraska Wesleyan | Checking Hats with the Lopsided Lovasz Local Lemma |

Fri Oct 16 , 2:30pm John Wierman Johns Hopkins University | An improved lower bound for the site percolation threshold of the hexagonal lattice |

Fri Oct 23 , 3pm Miklós Bóna University of Florida | A method to prove that the solution to some enumeration problems is a non-rational generating function |

Fri Oct 30 , 2:30pm Jaime Radcliffe University of Nebraska - Lincoln | Extremal problems for clique counting |

Fri Nov 06 , 2:30pm Guangming Jing Augusta University | TBA |

Fri Nov 13 , 2:30pm Rigoberto Flórez The Citadel | Some enumerations on non-decreasing Dyck paths |

Fri Nov 20 , 3:30pm Andrew Schwartz Southeast Missouri State University | Zero Forcing Sets in H-matchable Graphs |

Fri Dec 04 , 2:30pm Stephen Smith University of South Carolina | Is the induced subtanglegram relation a well quasi order? |