Why do we play chess for checkmate instead of playing more naturally to capture the enemy king? Would it be game-theoretically equivalent? Surprisingly, no, the two ways of playing are not equivalent.

Joel David Hamkins guides viewers through the great paradoxes and discoveries about infinity, from Zeno's ancient puzzles to Cantor's revolutionary proof that some infinities are larger than others.

This will be a talk for the CUNY Student Logic Seminar on 23rd October 2026, 5pm at the CUNY Graduate Center in midtown Manhattan. On the fundamental theorem of finite games Abstract: We will give …

This will be a talk for the CUNY Logic Workshop, 23 October 2026, 2pm, at the CUNY Graduate Center in midtown Manhattan. The Contingent HOD Dichotomy Joel David Hamkins, O’Hara Professor of L…

This will be a talk for the NYC Math Education and Communication Seminar, 20 October 2026, 12:15 – 1:15pm, at the CUNY Graduate Center in midtown Manhattan. Epistemic Logic Puzzles for Mathem…

In every finite two-player game of perfect information, either one player has a winning strategy or both players have drawing strategies.

Das Café Im gemütlichen Café in der ehemaligen Vorstube serviert Ihnen Brigitte Jürgensen mit ihrem Team Tee- und Kaffeespezialitäten und nur selbstgebackene Torten aus vollwertigen Lebensmitteln. Apfelkuchen mit kandierten Mandeln oder Trümmertorte mit Himbeer-Sahne-Füllung sind unsere Lieblingstorten. An Herzhaftem bieten…

This is a rough outline syllabus for the class I am teaching this semester at the University of Notre Dame on the philosophy and logic of games. University of Notre Dame        …

This is a rough outline syllabus for the class I am teaching this semester at the University of Notre Dame on the philosophy and logic of games. University of Notre Dame        …

YouTube video by Ergo

Galileo recognized that some infinite collections can be placed into one-to-one correspondence with a proper subcollection. How are we thus to make comparisons of size with the infinite?

YouTube video by Ergo

This will be a talk for the Mathematics Graduate Student Seminar on 23rd October 2026, 5pm at the CUNY Graduate Center in midtown Manhattan. On the fundamental theorem of finite games Abstract: We …