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Questions of the kind "What's the name for a X that satisfies property Y?"

9 votes
Accepted

Terminology generalizing "quasi-isomorphism"

I don't think this is completely standard, so if I were going to use it I would explain it first, but a natural possibility is "$\mathcal{F}$-isomorphism" (-monomorphism, -epimorphism). Quasi-isomo …
Mike Shulman's user avatar
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7 votes
Accepted

Terminology for extremal non-epimorphisms

In Sketches of an Elephant this kind of morphism is called a cover (section A1.3). In case you don't like that, here are some other possibilities (although I don't know that I actually like any of the …
Mike Shulman's user avatar
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4 votes
Accepted

"Pointwise" defintions in category theory

As Peter said in a comment, "objectwise" is quite common and would probably be understood even without quotation marks, although it never hurts to define a term the first time you use it. I expect th …
7 votes
Accepted

Terminology for a notion of "categories parameterized by another (symmetric monoidal) category"

Zhen is right that you can think of it as a lax monoidal pseudofunctor. In this paper, I called an equivalent structure a "monoidal fibration".
Mike Shulman's user avatar
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7 votes
Accepted

Terminology: Is there a name for a category with biproducts?

One name that I have seen used is semiadditive category.
Mike Shulman's user avatar
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8 votes
Accepted

What is the name of this categorical construction?

This is the Cauchy completion of $\mathcal{C}$ as an $\mathrm{Ab}$-enriched category.
Mike Shulman's user avatar
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9 votes
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Terminology: lax vs. oplax colimits

Of course, as Finn pointed out, there is controversy over the choice for natural transformations, but my views on that are clear at the nlab page so I'll just write using that terminology. …
Mike Shulman's user avatar
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8 votes
Accepted

Is there a better name for the "Mayer-Vietoris Octahedral axiom" and has it been studied?

In May's paper The additivity of traces in triangulated categories he has the following things to say about this property. (At least, I think it is an equivalent property -- his notation is different …
Mike Shulman's user avatar
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4 votes
Accepted

Terminology question for poset maps

I think one name for this is a simulation.
Mike Shulman's user avatar
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10 votes
Accepted

Intuition behind orthogonality in category theory, and origin of name

(Indeed, in this case we have "$C = M\circ E$" as monads in $\rm Prof$ via a distributive law, as shown by Cheng --- this long postdates the terminology, but the underlying intuition was probably there …
Mike Shulman's user avatar
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2 votes
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"discrete" objects of a $2$-category

I would call those objects "codiscrete" or "co-0-truncated", since "discrete" and "0-truncated" are used for the dual property, e.g. here and here. It's equivalent to saying that $B$ is equivalent to …
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