# University of Manitoba

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Scientific, Seminar

05C50 Online Seminar: Minerva Catral

A sign pattern (matrix) has entries in {+, -, 0}. We investigate eigenvalue properties of a sign pattern of order 2n where two of the blocks are prescribed sign patterns of order n, and the other two (order n) blocks are the positive diagonal sign...

Scientific, Seminar

05C50 Online Seminar: Harry Richman

The distance matrix of a graph records the length of the shortest path between any two vertices. Graham and Pollak found that when the underlying graph is a tree, the determinant of the distance matrix satisfies a nice, simple formula. In particular...

Scientific, Seminar

05C50 Online Seminar: Soffia Arnadottir

In this talk, I will introduce group-invariant quantum latin squares and their connection to quantum isomorphisms. There will be some representation theory and finally, we will see a method of constructing Cayley graphs that are quantum isomorphic...

Scientific, Seminar

05C50 Online Seminar: S. Ahmad Mojallal

Zero forcing is a combinatorial game played on a graph with the ultimate goal of changing the colour of all the vertices at a minimal cost. Originally this game was conceived as a one-player game, but later a two-player version was devised in...

Scientific, Seminar

05C50 Online Seminar: Alexander Farrugia

The adjugate matrix of a graph G on n vertices, denoted by adj G, is the adjugate of xI - A, where A is the 0-1 adjacency matrix of the graph. The entries of this matrix are polynomials in the variable x, of varying degrees. We shall first outline...

Scientific, Seminar

05C50 Online Seminar: Sooyeong Kim

Kemeny's constant, a fundamental parameter in the theory of Markov chains, has recently received significant attention within the graph theory community. Originally defined for a discrete, finite, time-homogeneous, and irreducible Markov chain based...

Scientific, Seminar

05C50 Online Seminar: Leonardo de Lima

In 1986, Wilf posed the following question ``Which graphs have eigenvectors with entries solely -1 and +1?''. Stevanovic (2016) showed that the problem of finding such graphs is NP-Hard. Caputo, Khames, and Knippel (2019) described all graphs whose...

Scientific, Seminar

05C50 Online Seminar: Hiranmoy Pal

We study the existence of quantum state transfer on double subdivided star, which is obtained by joining the coalescence vertices of a pair of subdivided stars. Using the Galois group of the characteristic polynomial of a double subdivided star, we...

Scientific, Seminar

05C50 Online Seminar: Enide Andrade

In this seminar we recall the spectral partitioning method based on a Fiedler vector, i.e., an eigenvector corresponding to the second smallest eigenvalue of the Laplacian matrix of a graph. This problem corresponds to the minimization of a quadratic...

Scientific, Seminar

05C50 Online Seminar: Leslie Hogben

There has been extensive study of diagonalization of matrices, or finding the Jordan Canonical Form for a matrix that is not diagonalizable. Diagonalization can be viewed as using a similarity to concentrate the magnitude of all the entries with a...

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## Staff

Position | Name | Phone # | Office | |
---|---|---|---|---|

Site Administrator, University of Manitoba | Alison Skopalek |
alison.skopalek@umanitoba.ca | ||

Eduction Coordinator - University of Manitoba | Darja Barr |
Darja.Barr@umanitoba.ca | +1 (204) 272-1609 | |

PIMS Site Director - University of Manitoba | Stephanie Portet |
Stephanie.Portet@umanitoba.ca | + 1 (204) 474 6933 | 428 Machray Hall |

Name | Original Location | In | Out |
---|---|---|---|

Rustum Choksi |
McGill University |

Name | Position | Research Interests | Supervisor | Year |
---|---|---|---|---|

Emmanuela Marangone |
PIMS Postdoctoral Fellow, University of Manitoba | Commutative Algebra, Combinatorics, and Algebraic Geometry | Susan Cooper | 2024 |

Jeet Sampat |
PIMS Postdoctoral Fellow, University of Manitoba | Operator Theory & Analytic Function Theory | Robert Martin | 2024 |

Poornendu Kumar |
PIMS Postdoctoral Fellow, University of Manitoba | Operator Theory | RaphaÃ«l ClouÃ¢tre | 2023 |

Andrii Arman |
PIMS Postdoctoral Fellow, University of Manitoba | Combinatorics | Andriy Prymak | 2022 |

Mahsa N Shirazi |
PIMS Postdoctoral Fellow, University of Manitoba | Combinatorics | Karen Gunderson | 2022 |

Josh Males |
University of Manitoba | Number Theory | Siddarth Sankaran | 2021 |

Meredith Sargent |
University of Manitoba | Functional Analysis | Robert T. Martin | 2021 |

Youngmin Park |
Postdoctoral Researcher | Ordinary Differential Equations | Stephanie Portet | 2021 |

Christopher van Bommel |
University of Manitoba | Combinatorics | Stephen Kirkland | 2020 |

Isam M.A. Al-Darabsah |
Postdoctoral Researcher, University of Manitoba | Differential equations, operational calculus | Kang-Ling Liao | 2020 |

Peter Kristel |
University of Manitoba | Geometry | Derek Krepski | 2020 |

Edward Timko |
Postdoctoral Researcher, University of Manitoba | Operator theory | RaphaÃ«l ClouÃ¢tre | 2019 |

Fei Qi |
Postdoctoral Researcher, University of Manitoba | Category theory homological algebra | Eric Schippers | 2019 |

Sam Cole |
University of Manitoba | Algebra | Stephen Kirkland | 2018 |

Sergio DaSilva |
University of Manitoba | Algebraic Geometry | Susan Cooper | 2018 |

Seth Wolbert |
University of Manitoba | Differential Geometry | Derek Krepski | 2018 |

Jennifer Jaye Vaughan |
University of Manitoba | Differential Geometry | Derek Krepski | 2016 |

Ling Xue |
University of Manitoba | Biology/Differential Equations | Julien Arino | 2016 |