cospan

Etymology

co- + span

noun

  1. (mathematics) The dual of a span.
    This extra structure arises from a lax symmetric monoidal functor F: mathbf C→ mathbf D; we use this functor to "decorate" each cospan with apex N∈ mathbf C with an element of F(N). 2016, Kenny Courser, “A bicategory of decorated cospans”, in arXiv

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