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arXiv · 2305.01854

The free Eggert-operad and an operadic description of groups

Roman Haak
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Abstract

An Eggert-operad is a variant of Mac Lane's notion of a PROP, for which not only bijective maps, but all maps between standard finite sets, are part of the structure. We construct the free Eggert-operad and prove the universal property it satisfies. Further we use the free Eggert-operad to define the Eggert-operad $\mathrm{GROUP}_0^{\mathrm{fp}}$ via generators and relations and show that a $\mathrm{GROUP}_0^{\mathrm{fp}}$-algebra is a group and vice versa. At the end we prove operadic versions of some elementary facts about groups.

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Roman Haak. 2023-05-03. The free Eggert-operad and an operadic description of groups. https://arxiv.org/abs/2305.01854

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