Categories without identities

311 Views Asked by Bumbble Comm At 30 Mar 2026 - 1:34

What's the name of "categories without identities", i.e. of digraphs with just an associative binary operation on its "matching" arrows (disregarding identities)?

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Bumbble Comm On 12 Aug 2013 - 4:40 BEST ANSWER

Semicategory. ${}{}{}{}{}{}{}{}{}{}{}{}{}$

Bumbble Comm On 12 Aug 2013 - 4:53

Semigroupoid. ${}{}{}{}{}{}{}{}{}{}{}{}{}$

Categories without identities

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