224 karma · joined December 6, 2012
[0]: https://link.springer.com/article/10.1007/s10676-024-09775-5
x = y | 1 | z
-x = ~x + 1
-x = (~y | 0 | ~z) + 1
-x = ~y | 1 | z
x & -x = (y & ~y) | (1 & 1) | (z & z)
x & -x = 0 | 1 | z
There's two reading errors I would expect someone to make given this experiment:
1. The instructions that each card has exactly one letter and exactly one number are before the big cards. I bet many players just skipped that instruction.
2. Mistaking the P→Q as P←→Q smacks more of a reading comprehension error than a logical error.
Disclosure: I made both mistakes. (-:
https://doctorow.medium.com/a-bug-in-early-creative-commons-...
> TikTok is finally concave down
Folks interested in open collaborative math content may find these interesting:
Additionally, SageMath (which depends on SymPy) is the more comparable product (and is open source).