Not signed in (Sign In)

Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

  • Sign in using OpenID

Site Tag Cloud

2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration foundation foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry graph graphs gravity grothendieck group group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory homological homological-algebra homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory internal-categories k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics pro-object probability probability-theory quantization quantum quantum-field quantum-field-theory quantum-mechanics quantum-physics quantum-theory question representation representation-theory riemannian-geometry scheme schemes set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory stack string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft type type-theory universal variational-calculus

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to nForum
If you want to take part in these discussions either sign in now (if you have an account), apply for one now (if you don't).
    • CommentRowNumber1.
    • CommentAuthorTobyBartels
    • CommentTimeOct 13th 2013

    I don't know why we never had endofunction, but we didn't; now we do.

    • CommentRowNumber2.
    • CommentAuthorzskoda
    • CommentTimeOct 14th 2013

    Who uses the term ? References ?

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeOct 14th 2013

    Ask Google and you’ll get answers.

    • CommentRowNumber4.
    • CommentAuthorTobyBartels
    • CommentTimeOct 14th 2013

    If you don't like that term, there are five other redirects (not counting plurals).

    Etymologically, it is a bastard, I'll grant you that!

    • CommentRowNumber5.
    • CommentAuthorTodd_Trimble
    • CommentTimeOct 15th 2013

    A lot of people use the term. I know I do! (There are of course many such bastards in English, e.g., ’television’.)

    • CommentRowNumber6.
    • CommentAuthorzskoda
    • CommentTimeOct 15th 2013
    • (edited Oct 15th 2013)

    If you don’t like that term

    On the contrary! But still wanted to get a straightfoward answer.

    Urs: google does not give much of an impression on WHO uses the term. (e.g. Wikipedia gives one line entry. Most of the hits are non-mathematical.) E.g. is it in american math textbooks ? Which area of math has this terminology as standard ? Set theorists ?

    • CommentRowNumber7.
    • CommentAuthorTodd_Trimble
    • CommentTimeOct 15th 2013

    Zoran, it’s my impression that the term is widely used in the categorical community. I doubt it’s all that common in the set theory literature. A number of hits indicate to me that its meaning is widely understood amongst computer scientists, and also among combinatorialists.

    • CommentRowNumber8.
    • CommentAuthorzskoda
    • CommentTimeOct 15th 2013
    • (edited Oct 15th 2013)

    I use endofunctor very often (and even endo-1-cell, but not yet endofunction). I also use terms monopresheaf (for separated sheaf) and epipresheaf (for the complementary presheaf property to sheaf), but the fate of such good notation which is not generally accepted is risky. That is why I am interested. So the answer is the category theory community, thanx Todd!