Computer Science/Discrete Mathematics Seminar I

Random Walk and Paint Blending

Random walks on a graph, and Markov chains in general, provide endless fascination and myriad applications (for example, in sampling and approximation algorithms.)  A nearly trivial but endlessly useful tool in this theory is the "harmonic lemma for graphs".  We show that the role of averaging in this lemma can be played by paint blending about which we know nothing.

Joint work with Tejo Madhavarapu and Kyle Petersen.

Date & Time

October 12, 2026 | 11:00am – 12:00pm
Add to calendar 10/12/2026 11:00 10/12/2026 12:00 Computer Science/Discrete Mathematics Seminar I use-title Topic: Random Walk and Paint Blending Speakers: Peter Winkler, Dartmouth College More: https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-seminar-i-632 Random walks on a graph, and Markov chains in general, provide endless fascination and myriad applications (for example, in sampling and approximation algorithms.)  A nearly trivial but endlessly useful tool in this theory is the "harmonic lemma for graphs".  We show that the role of averaging in this lemma can be played by paint blending about which we know nothing. Joint work with Tejo Madhavarapu and Kyle Petersen. Simonyi 101 and Remote Access a7a99c3d46944b65a08073518d638c23

Location

Simonyi 101 and Remote Access

Speakers

Peter Winkler, Dartmouth College