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joeldavidhamkins.bsky.social
Mathematics and Philosophy of the Infinite Professor of Logic, University of Notre Dame University of Oxford #InfinitelyMore #BookOfInfinity #PanoramaOfLogic #PhilMaths
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Just learned that my Reinhardt lecture today will be on Zoom. Contact me for the coordinates. www.colorado.edu/math/2025/03...

submitted 22 hours ago • 2 comments

My view: so-called hard Wordle is inferior as a game to regular Wordle, since it shuts down the extremely interesting and challenging strategic play intended to discern a large space of possible answers. Especially true on move 2. The real goal in Wordle is to win on move 3.

submitted 1 day ago • 0 comments

The penny-partition paradox, a perplexing parable of profit. This week's installment from Infinite Games: Frivolities of the Gods. www.infinitelymore.xyz/p/penny-part... #InfinitelyMore #FrivolitiesOfTheGods

submitted 1 day ago • 2 comments

It is tragic that there is no day when people neither fail to know De Morgan’s laws nor fail to seize opportunities to apply them.

submitted 2 days ago • 10 comments

A fun math puzzle #mathsky: In front of you is a line of blue and green tokens. At each turn, you choose an adjacent pair of a blue token followed by a green token; your opponent replaces them with any number of green tokens followed by any number of blue tokens.

submitted 4 days ago • 4 comments

Technology can serve as a great tool for thinking classroom students to explore, wonder, and make conjectures. What can students tell us as they interact with George’s picture here? youtube.com/shorts/VDcQF... @peterliljedahl.bsky.social @btcthinks.bsky.social #MTBoS #ITeachMath #mathteacher #EduSky

submitted 5 days ago • 2 comments

I am truly honored to be giving the 2025 William Reinhardt Memorial Lecture next week at the University of Colorado Boulder. "How we might have taken the Continuum Hypothesis as a fundamental axiom, necessary for mathematics" www.colorado.edu/math/2025/03...

submitted 5 days ago • 1 comment

That time when Peter Scholze refers on MathOverflow to "this beautiful article" in reference my paper on Boolean ultrapowers (with Dan Seabold), saying in the comments "This reference is extremely (extremally?) enlightening!". mathoverflow.net/a/385624

submitted 7 days ago • 1 comment

The hypergame paradox. This week's installment of Infinite Games: Frivolities of the Gods. Follow along with my class this semester on the philosophy and logic of games. www.infinitelymore.xyz/p/hypergame-... #InfinitelyMore #FrivolitiesOfTheGods

submitted 9 days ago • 3 comments

My observation. Every game is hypergame for the class of games that would arise if the first player had made a move.

submitted 10 days ago • 0 comments

My first AMS short story column is now out in the current issue of the Notices. The nearly perfect prediction theorem. www.ams.org/journals/not...

submitted 14 days ago • 1 comment

My substack is now recommended by Grant Sanderson of 3Blue1Brown. 3blue1brown.substack.com/recommendati... #InfinitelyMore

submitted 15 days ago • 0 comments

Tic-tac-toe and variants! 4 x 4 tic-tac-toe, recursive tic-tac-toe, 3D tic-tac-toe and more. www.infinitelymore.xyz/p/tic-tac-to... #InfinitelyMore #FrivolitiesOfTheGods

submitted 15 days ago • 0 comments

Can you #GuessTheTheorem? Post your answers.

submitted 21 days ago • 2 comments

On a related note, the one point space is totally disconnected, since any two distinct points lie in different connected components.

submitted 21 days ago • 3 comments

In my games class, we're calling the 4x4 variation Tic Tac Tip Toe.

submitted 21 days ago • 0 comments