5 ideas
17813 | Löwenheim-Skolem says any theory with a true interpretation has a model in the natural numbers [White,NP] |
17812 | Finite cardinalities don't need numbers as objects; numerical quantifiers will do [White,NP] |
22724 | Good strategies avoid conflict, respond to hostility, forgive, and are clear [Axelrod] |
22725 | When players don't meet again, defection is the best strategy [Axelrod] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |