Page "Idempotence" Paragraph 67
from
Wikipedia
An idempotent element a of R and its associated involution f gives rise to two involutions of the module R, depending on viewing R as a left or right module.
If r represents an arbitrary element of R, f can be viewed as a right R-homomorphism so that, or f can also be viewed as a left R module homomorphism, where.
Page 1 of 1.
1.854 seconds.