Faithful Galois action on components of moduli of minimal surfaces

About 18 years old · traced to

Let ϕ∈Gal⁡(Q‾/Q)\phi \in \operatorname{Gal}(\overline{\mathbb{Q}}/\mathbb{Q}) be different from the identity and from complex conjugation. Let SS be a minimal surface of general type, and let

M:=⋃x,y≥1Mx,y\mathfrak M:= \bigcup_{x,y \geq 1} \mathfrak M_{x,y}

be the coarse moduli space of minimal surfaces of general type.

Faithful-action conjecture. There is a minimal surface of general type SS such that SS and its conjugate SϕS^{\phi} have non-isomorphic fundamental groups. In particular, SS and SϕS^{\phi} are not homeomorphic; hence Gal⁡(Q‾/Q)\operatorname{Gal}(\overline{\mathbb{Q}}/\mathbb{Q}) acts faithfully on the set of connected components of M\mathfrak M.

This would turn the known phenomenon of Galois-conjugate surfaces with different fundamental groups into a faithful action on moduli components. The supplied text describes this as work in progress, and gives no resolution of the assertion.

References

Primary source

Fabrizio Catanese, “Algebraic Surfaces and their Moduli Spaces: Real, Differentiable and Symplectic Structures”, arXiv:0812.4318 (2008).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.