# sci.math.research

**Obtaining a morphism of sheaves from homotopy data**,
*categorist*
**Complexity of Sparse Cholesky Factorization**,
*crazyFritz*
**This week in the mathematics arXiv (19 Jun - 23 Jun)**,
*Greg Kuperberg*
**A problem in elementary group theory**,
*freedom641@xxxxxxxxx*
**This Week's Finds in Mathematical Physics (Week 235)**,
*John Baez*
**coherent sheaves versus vector bundles**,
*John Baez*
**Five papers published by Geometric & Topology Publications**,
*Geometry and Topology*
**Intrinsic definitions of pseudovectors/&c.**,
*Stephen Lavelle*
**Algorithm to fit rectangles with different areas inside a matrix with lowest complexity**,
*danicamps81*
**Fixed points of a weakly continuous map f:H->H satisfying f(f(x))=x**,
*Jack Stone*
**a limit problem**,
*zhangyi . zhangyi*
**How to solve this PDE (laplace equation)?**,
*wandering . the . cosmos*
**Large deviations principles of Non-Freidlin-Wentzell type.**,
*jaykov*
**function semi-algebraic over real closed sub-field?**,
*Martin Ziegler*
**Re: characterization of W^{1,p} norms**,
*don*
**A conjecture on class numbers**,
*titus_piezas*
**Computing the Gerstenhaber Bracket**,
*Aaron Bergman*
**how to efficiently solve a relatively large scale linear equation system?**,
*helen*
**Call for Papers: Graphs, Mappings and Combinatorics at the Minnesota State Fair**,
*EdV*
**Thoughts on Bessel functions**,
*genewardsmith*
**Roulettes**,
*Narasimham*
**Some Very Trivial Ideas on Morse Theory**,
*h0399932*
**Re: Why are there only finitely many Steiner points?**,
*tchow*
**This week in the mathematics arXiv (12 Jun - 16 Jun)**,
*Greg Kuperberg*
**This week in the mathematics arXiv (5 Jun - 9 Jun)**,
*Greg Kuperberg*
**Quatro-Quaternions and the matrix representations of octonions.**,
*Hypercomplex.com*
**Re: Classifying nondegenerate bilinear forms**,
*Ilya Zakharevich*