David Helm

Teaching

Papers

1. Bass numbers of Semigroup-Graded Local Cohomology (With Ezra Miller), Pacific Journal of Math. 209, no. 1 (2003), 41-66.   Official version
2. Algorithms for graded injective resolutions and local cohomology over semigroup rings (with Ezra Miller), Journal of Symbolic Computation, 39, no. 3-4 (2005), 373-395.  
   22 pages   DVI,   postscript,  
3. Jacobians of Shimura curves and Jacquet-Langlands Correspondences (Thesis)
   64 pages   DVI,   postscript,  
4. On maps between modular Jacobians and Jacobians of Shimura curves, Israel J. Math., to appear.
   35 pages   DVI,   postscript,  
5. A geometric Jacquet-Langlands correspondence for U(2) Shimura varieties (Submitted)
   27 pages   DVI,   postscript,  
6. Towards a geometric Jacquet-Langlands correspondence for unitary Shimura varieties
   22 pages   DVI,   postscript,  
7. Mazur's principle for U(2,1) Shimura varieties (Submitted)
   20 pages   DVI,   postscript,