Following the analogy between algebras (monoids) and monoidal categories the construction of nucleus for non-associative algebras is simulated on the categorical level.
Nuclei of categories of modules are considered as an example.
Keywords: monoidal categories, monoidal functors, quasi-bialgebras
2000 MSC: 18D10
Theory and Applications of Categories,
Vol. 18, 2007,
No. 16, pp 440-472.
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