monic en · ADJ
Pronunciation
- (Southern-England) audio
- /ˈmɒn.ɪk/ (Received-Pronunciation)
- /ˈmɑ.nɪk/ (General-American)
Etymology
From mono- + -ic.
Meanings
- (not-comparable) Of a polynomial whose leading coefficient is one.
- (not-comparable) Monomorphic.
-
(not-comparable) Of a morphism: that it is a monomorphism.
If a composition (of morphisms) is monic then, by theorem, the pre-composite of it is monic as well.
It is often convenient to view a monic arrow i#58;A#92;rightarrowtailC, defined in Chapter 1, as showing that A is a copy of a part of C, and that i maps the copy on to that part. For example, in Set, the monic arrows are the one-to-one functions and, clearly, if i is one-to-one then A is a copy of a subset of C, namely of the image of i.
1995, Colin McLarty, “Introduction”, in Elementary Categories, Elementary Toposes, →ISBN, page 5: