Banach algebra
noun
Ba·nach algebra
ˈbä-ˌnäk-,
-nək-,
-ˌnäḵ-,
-nəḵ-
: a linear algebra over the field of real or complex numbers that is also a Banach space for which the norm of the product of x and y is less than or equal to the product of the norm of x and the norm of y for all x and y belonging to it
Word History
Etymology
after Stefan Banach †1945 Polish mathematician
First Known Use
1944, in the meaning defined above