The lower bound for C-loops with associators of prescribed order

Let CC be a C-loop, and suppose that CC contains an associator of order nn. An associator is an element of the form [x,y,z]=(xyz)1(xyz)[x,y,z]=(xy\cdot z)^{-1}\cdot(x\cdot yz) for elements x,y,zCx,y,z\in C.

Lower-bound conjecture. The order of CC satisfies

C4n|C|\ge 4n

if nn is odd, and

C8n|C|\ge 8n

if nn is even.

The preceding construction gives nonflexible C-loops attaining these bounds up to the stated parity-dependent values, so the conjecture asserts that the constructions are order-minimal. The source provides evidence but no proof or resolution.

Sources & referencesView supporting material

Primary source

Michael K. Kinyon, J. D. Phillips and Petr Vojtěchovský, “C-loops: extensions and constructions”, arXiv:math/0412390 (2004).

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