There is an old maxim that says that two empires that are too large will collapse. The analog in set theory is that two different theories that are too powerful must necessarily contradict each other. — Saharon Shelah Copy Share Image
Given a conjecture, the best thing is to prove it. The second best thing is to disprove it. The third best thing is to… — Saharon Shelah Copy Share Image
There is an old maxim that says that two empires that are too large will collapse. The analog in set theory is that two… — Saharon Shelah Copy Share Image
Number theorists say that number theory is too complicated, so let's pretend that there is only one prime number, and then let's combine all… — Saharon Shelah Copy Share Image
Cardinal Arithmetics is much older than Number Theory. People used to exchange things way before there were numbers. Expressing numbers like 762 is already… — Saharon Shelah Copy Share Image