Universality conjecture for the formal group of geometric cobordisms over Hopf algebras

Let HH be a (topological) Hopf algebra and let F(x1,1x){\frak F}(x\otimes 1,1\otimes x) denote the formal group constructed from geometric cobordisms over HH.

Universality conjecture. The formal group F(x1,1x){\frak F}(x\otimes 1,1\otimes x) is the universal object in the category of formal groups over a (topological) Hopf algebra.

This asserts that the formal group of geometric cobordisms has the expected universal property in the category of formal groups over topological Hopf algebras. The surrounding text recalls that the ordinary formal group of geometric cobordisms is known to be universal, but does not provide a resolution of this Hopf-algebraic formulation.

Sources & referencesView supporting material

Primary source

A. V. Ershov, “Formal groups over Hopf algebras”, arXiv:math/0105122 (2001).

Additional references

2 papers in this index state this conjecture (2001). The statement above is taken from the most recent of them; the others are arXiv:math/0102054.

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