Commentarii Mathematici Helvetici
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Volume 84, Issue 1, 2009
A product formula for valuations on manifolds with applications to the integral geometry of the quaternionic line
Andreas Bernig
pp. 1–19
Abstract | Full-Text PDF (180 KB)
Selmer groups and Tate–Shafarevich groups for the congruent number problem
Maosheng Xiong and Alexandru Zaharescu
pp. 21–56
Abstract | Full-Text PDF (291 KB)
Kodaira dimension and symplectic sums
Michael Usher
pp. 57–85
Abstract | Full-Text PDF (254 KB)
A Caporaso–Harris type formula for Welschinger invariants of real toric Del Pezzo surfaces
Ilia Itenberg, Viatcheslav Kharlamov and Eugenii Shustin
pp. 87–126
Abstract | Full-Text PDF (325 KB)
Transcendental submanifolds of projective space
Wojciech Kucharz
pp. 127–134
Abstract | Full-Text PDF (86 KB)
String topology for spheres
Luc Menichi
pp. 135–157
Abstract | Full-Text PDF (228 KB)
EG for systolic groups
Piotr Przytycki
pp. 159–169
Abstract | Full-Text PDF (109 KB)
Group splittings and integrality of traces
Ioannis Emmanouil
pp. 171–187
Abstract | Full-Text PDF (149 KB)
A lower bound on the essential dimension of a connected linear group
Philippe Gille and Zinovy Reichstein
pp. 189–212
Abstract | Full-Text PDF (215 KB)
Zero-in-the-spectrum conjecture on regular covers of compact manifolds
Piotr W. Nowak
pp. 213–222
Abstract | Full-Text PDF (117 KB)