AllTalk

5 ms·

1.
Chaos train quantifier logic problem(twitter.com)
1 points by AllTalk 9y ago|0 comments
2.
Would one day of NYC coffee fill the Statue of Liberty? And other fun questions(jdh.hamkins.org)
1 points by AllTalk 10y ago|0 comments
3.
Pop culture written in logic – can you figure them out?(jdh.hamkins.org)
1 points by AllTalk 11y ago|0 comments
4.
Pop culture quotes written in first-order logic – can you figure them out?(jdh.hamkins.org)
3 points by AllTalk 11y ago|1 comments
5.
Math for kids: fold, punch and cut(jdh.hamkins.org)
3 points by AllTalk 11y ago|0 comments
6.
Math for nine-year-olds: fold, punch and cut for symmetry(jdh.hamkins.org)
1 points by AllTalk 11y ago|0 comments
7.
by AllTalk 11y ago
There are insane positions in infinite chess, a kind of chess warfare, involving a bishop gun battery, where black can fire arbitrarily large bishop guns; each bishop moving out is a kind of bullet, and white must answer at every step. But
8.
Infinite chess -– bishop cannon gun battery fires out bishop cannonballs(jdh.hamkins.org)
3 points by AllTalk 11y ago|1 comments
9.
Insane position in infinite chess -– bishop gun battery fires bishops out(jdh.hamkins.org)
2 points by AllTalk 11y ago|0 comments
10.
by AllTalk 11y ago
I think it is just the usual order on the rational numbers, but since he uses only some of the rationals, it does amount to using ordinals. But, I think your solution is off by at least a factor of omega.
11.
Transfinite epistemic logic puzzle challenge: Cheryl's birthday on steroids(jdh.hamkins.org)
2 points by AllTalk 11y ago|3 comments
12.
by AllTalk 12y ago
Wow, what a nice testimonial!
13.
by AllTalk 12y ago
The V-E+R follows the pattern of zero-dimensional, one-dimensional, two-dimensional, and this alternating sum formulation continues for the Euler characteristic in higher dimensions. So that is one reason to keep V-E+R. Another reason, howe
14.
by AllTalk 12y ago
Screenshot of the site: http://i.imgur.com/yFfyjN0.png
15.
Math for eight-year-olds: graph theory for kids(jdh.hamkins.org)
350 points by AllTalk 12y ago|45 comments
16.
Math for eight-year-olds: graph theory and the Euler characteristic(jdh.hamkins.org)
3 points by AllTalk 12y ago|0 comments