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The magma-operad conjecture on the Grothendieck–Teichmüller embedding
The magma operad is an operad whose operations encode binary compositions, and $G=\operatorname{Gal}(\overline{\bold{Q}}/\bold{Q})$ acts on the genus-zero modular operad and its as…
Conjectureopendessins-denfants grothendieck-teichmuller-group modular-operadsarXiv posted 2 days ago

The magma-operad conjecture on the Grothendieck–Teichmüller embedding