Let R be a ring with unity, 1. Let S be a ring and suppose phi: R --> S is an epimorphism. Prove that phi(1) is a unity for S.

Printable View

- Oct 13th 2009, 10:04 AMCoda202Epimorphism
Let R be a ring with unity, 1. Let S be a ring and suppose phi: R --> S is an epimorphism. Prove that phi(1) is a unity for S.

- Oct 13th 2009, 01:49 PMtonio