2 papers
math.CO2003
What majority decisions are possible
Saharon Shelah
The main result is the following: Let X be a finite set and D be a non empty family of choice functions for (X choose 2) closed under permutation of X. Then the following condition…
math.LO2002
Logical Dreams
Saharon Shelah
We discuss the past and future of set theory, axiom systems and independence results. We deal in particular with cardinal arithmetic.