TY  - BOOK
TI  - Mathematics textbook for class x1
SN  - 8174504869
U1  - 510 N 21338 M 
PY  - 2006///
CY  - Kolkotta
PB  - National council of educational research and training
KW  - Mathematicians
N1  - The concept of set serves as a fundamental part of the present day mathematics; Sets and their representation
The empty set
Finite and infinite sets
ER  -