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Although the University of Waterloo is closed for in-person events until further notice, many virtual events and presentations of interest to computer scientists are taking place each week at the Cheriton School of Computer Science. Please check out what our students and faculty are doing.

Events by date

Wednesday, August 29, 2018

Wednesday, August 29, 2018 — 1:30 PM EDT

Finn Lidbetter, Master’s candidate
David R. Cheriton School of Computer Science

Let x and y be words. We consider the languages whose words z are those for which the numbers of occurrences of x and y, as subwords of z, are the same (resp., the number of x's is less than the number of y's, resp., is less than or equal). In this talk we will give a necessary and sufficient condition on x and y for these languages to be regular, and we show how to check this condition efficiently. 

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