Math-Frolic!

  A few logic problems (via Alex Bellos) to start your week: https://www.theguardian.com/science/2021/aug/23/can-you-solve-it-logical-philos...

  The latest essay from Jim Propp: https://mathenchant.wordpress.com/2021/08/16/reckoning-and-reasoning/

  Bored with the headlines, folks?... Is election news getting you down?... Or the blitz of political ads scraping on your last nerve?... Is...

Yo, logic enthusiasts, when I saw a post entitled, “ Smullyan and the President’s Sanity ” listed on the mathbogging.org feed  this mornin...

Am copying this verbatim from a recent  Futility Closet posting about a hand of cards: ***************************** Given these pr...

Wonderful new Brian Gallagher article in Nautilus yesterday covers some classic Ray Smullyan/George Boolos logic conundrums: http://naut...

" Classical logic is like a person who comes to a play dressed in a black suit, a white, starched shirt, a black tie, shiny shoes,...

List:    1.   This sentence contains eight words.    2.   This sentence contains five words.    3.   Exactly one sentence in this l...

1) Probably any mathematician would rank Leonhard Euler as one of the greatest mathematicians of all time (he pretty much shows up on any...

Call me a masochist, but I do love these self-referential or recursive logic puzzles (that shred my brain to itty-bitty, miniscule, pulsati...

For those inclined toward epistemology and formal logic, another wonderful post from RJ Lipton below, this time on the possible inconsisten...

Fun post from Bill Gasarch on the sometimes popular (and paradoxical) notion that professional logicians tend to be CRAZY ("a few axiom...