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    • CommentRowNumber1.
    • CommentAuthorTobyBartels
    • CommentTimeFeb 5th 2016

    I wrote alternating multifunction, which is perhaps too generalized?

    • CommentRowNumber2.
    • CommentAuthorTodd_Trimble
    • CommentTimeFeb 6th 2016

    I was for a moment worried about base rig as opposed to based ring, but I think it’s okay. Back of envelope calculation:

    0=f(x+y,x+y)=f(x,x)+f(y,x)+f(x,y)+f(y,y)=f(y,x)+f(x,y)0 = f(x + y, x + y) = f(x, x) + f(y, x) + f(x, y) + f(y, y) = f(y, x) + f(x, y)

    which with f(x,x)=0f(x, x) = 0 gives what we want (even in characteristic 22, right?).

    The extra generality with pointed sets seems harmless, but does it crop up organically in situations? Do you have an application in mind?

    (Superalgebra is the niche I tend to place alternating multilinear functions in, although maybe that’s been covered elsewhere in the Lab.)