Silly #mathematics terminology:
Yesterday I wanted to talk about the following property that a two-operand function can have: if you fix either operand to a constant, the one-operand function you have left is always a bijection.
(For example, subtraction mod n has this property. "Subtract x" and "subtract from x" are both bijections, no matter what x is.)
By analogy with "bilinear", surely the right term for this is "bibijective"!
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