English

$L_{\infty}$-algebra of an unobstructed deformation functor

Algebraic Geometry 2007-05-23 v2

Abstract

This is a comment on the Kuranishi method of constructing analytic deformation spaces. It is based on a simple observation that the Kuranishi map can always be inverted in the category of LL_{\infty}-algebras. The LL_{\infty}-structure obtained by this inversion is used to define an ''unobstructed'' deformation functor which is always representable by a smooth pointed moduli space. The singular nature of the original Kuranishi deformation space emerges in this setting merely as a result of the truncation of this ``naive'' LL_{\infty}-algebra controlling the deformations to a usual differential Lie algebra.

Keywords

Cite

@article{arxiv.math/9907031,
  title  = {$L_{\infty}$-algebra of an unobstructed deformation functor},
  author = {S. A. Merkulov},
  journal= {arXiv preprint arXiv:math/9907031},
  year   = {2007}
}

Comments

LaTeX, 15 pages; small changes