TY  - GEN
AU  - Bourbaki, N.
TI  - Elements of mathematics theory of sets
SN  - 9783540225256
U1  - 512 
PY  - 2004///
CY  - New York
PB  - Springer
N1  - 1. Description of formal mathematics
2. Theorems
3. Logical theories
4. Quantified theories
5.Equalitarian theories

1. Collectivizing relation
2. Ordered pairs
3. Union and intersection of a family of sets

ER  -