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for questions about deformation theory, including deformations of manifolds, schemes, Galois representations, and von Neumann algebras.

2 votes
0 answers
357 views

Deformation over small disk and deformation over complex disk

Let $D=\mathop{Spec}(\mathbb C[[t]])$ be the algebraic small disk and let $\Delta= \{z\in \mathbb C: |z|<1\} $. Let $X_0$ be an algebraic surface over $\mathop{Spec}\mathbb C$ Suppose now that I hav …
Rogelio Yoyontzin's user avatar
5 votes
1 answer
460 views

Existence of logarithmic structures and d-semistability

I am reading a paper ( Kawamata, Y.; Namikawa, Y. Logarithmic deformations of normal crossing varieties and smoothing of degenerate Calabi-Yau varieties. Invent. math. 1994, 118, 395–409.) I have a qu …
Rogelio Yoyontzin's user avatar