TY  - BOOK
AU  - Halmos,Paul R.
TI  - A hilbert space problem book
SN  - 9788184898323
U1  - 515.733 
PY  - 2011///,2014
CY  - New Delhi
PB  - Springer
KW  - Mathematics
KW  - Hilbert space
KW  - Global differential geometry
ER  -