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What (who) is EFFACEABLE - definition
Effaceable
·adj Capable of being effaced.
Effaceable functor
In mathematics, an effaceable functor is an additive functor F between abelian categories C and D for which, for each object A in C, there exists a monomorphism u: A \to M, for some M, such that F(u) = 0. Similarly, a coeffaceable functor is one for which, for each A, there is an epimorphism into A that is killed by F.
efface
[?'fe?s]
¦ verb
1. erase (a mark) from a surface.
2. (efface oneself) make oneself appear insignificant or inconspicuous.
Derivatives
effacement noun
Origin
C15 (in the sense 'pardon or be absolved from an offence'): from Fr. effacer, from e- (from L. ex- 'away from') + face 'face'.
