Hi, I'm Olha Silina
Hi, I'm Olha Silina
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PIMS-Simons Postdoctoral Fellow, Sauder School of Business, UBC (starting Aug 2026)
Introduction
Introduction
I am currently a PIMS-Simons Postdoctoral Fellow at the Sauder School of Business, where I am working with Joe Paat and Cedric Koh. I obtained my PhD in Algorithms, Combinatorics, and Optimization at Carnegie Mellon University in April 2026. My PhD advisor is Gerard Cornuejols from the Tepper School of Business. My research interests are graph theory, polyhedral theory, packing problems, and approximation algorithms.
I got a bachelor's degree in Combinatorics and Optimization and Pure math at the University of Waterloo in 2021, where I was fortunate to work with Chris Godsil and Ricardo Fukasawa.
Selected honors: Outstanding Graduate Research Prize, Carnegie Mellon University (2025); Stewart and Ann Kelland Award in Pure Mathematics, University of Waterloo (2019). Before university, I represented Ukraine at the IMO (2016, Bronze) and EGMO (2016, Gold; 2015, Silver).
Publications
Publications
Lattice Structure and Efficient Basis Construction for Strongly Connected Orientations, with Siyue Liu.
appeared in IPCO 2026.(Under review) A Polyhedral Perspective on the Perfect Matching Lattice.
Integral bases, perfect matchings, and the Petersen graph, with Ahmad Abdi.
in Mathematical Programming, Series A, 2026.A Better-Than-2 Approximation for the Directed Tree Augmentation Problem, with Meike Neuwohner and Michael Zlatin
appeared in SODA 2026.
Strongly connected orientations and integer lattices, with Ahmad Abdi, Gerard Cornuejols, and Siyue Liu
appeared in IPCO 2025 here.
in Discrete Mathematics, October 2025.
An Unregularized Third Order Newton Method, with Jeffrey Zhang.
Graph covers with two new eigenvalues, with Christopher Godsil and Maxwell Levit
in European Journal of Combinatorics, March 2021.
Talks
Talks
SIAM OP 2026
ASU Discrete Math Seminar, May 2026
IPCO 2025
Cargese Workshop, 2024
ISMP 2024
ACORN 2023
CGO Seminar, London School of Economics (during research visit)
ACO Seminar, Carnegie Mellon University
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