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In her paper, the 1989 Erdos-Hajnal conjecture is resolved for cycles of length 5.

Jodie Wallis (BMath ’93) was a natural fit for Operations Research at the Faculty of Mathematics. “I liked how Operations Research brought together different disciplines and applied directly to business problems,” she affirmed. “That process of taking a problem, considering multiple layers of solutions, and ending up with something that’s elegant and workable in the real world was appealing to me.”

C&O professor David Gosset has published a paper "Classical algorithms for quantum mean values" in Nature Physics.

Earlier this year, Canada and the United Kingdom (UK) joined together to put a call out for proposals of collaborations between leading-edge scientists and potential innovative users from industry and government sectors to accelerate the development of quantum technologies.

“When I was a kid, I always begged my parents to buy me those little Mind Benders puzzles,” remembered Rose McCarty. “My favorite puzzles were the ones that were so difficult that I wasn’t sure whether or not I could actually solve them. At Waterloo Math, I’m the one coming up with different puzzles to solve. I have an opportunity to tackle big, imprecise, unwieldly problems that determine what my field will look like in 20 years.”

Bill Cook (C&O) and Keld Helsgaun (Roskilde University, Denmark) have found a Hamiltonian tour through the three-dimensional positio