Has anybody heard about Gershgorin' biography?
The only clue I found is in C. LANCZOS' Applied Analysis (Dover):
he tells that his theorem on the localisation of eigenvalues goes
back to 1931, but he doesn't give any reference where it appeared first.
Every book about matrix analysis quotes the result, but no one
seems to give any reference (I did not have GOLUB/VAN LOAN at hand).
There is no entry at http://www-groups.dcs.st-and.ac.uk/~history/Alphabetical.html.
So any information on his life and work would be greatly appreciated.
Greatings from Lille,
**************************************
Alain JUHEL
LILLE, France
Tél : 03.20.77.63.69
e-mail : ajuhel@nordnet.fr
**************************************