Intrinsic tensor products and a Ganea-type extension of the five-term exact sequence

arXiv:2512.03951v2 Announce Type: replace Abstract: We establish a right-exactness theorem for the cross-effects of bifunctors, and consequently for cosmash products, in Janelidze-M\'arki-Tholen semi-abelian categories. This result motivates an intrinsic definition of a symmet...

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