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Meta
Tag Archives: Ouroboros
How not to be wrong
I recently finished listening to Jordan’s book “how not to be wrong,” and thought that I would record some of the notes I made. Unlike other reviews, Persiflage will cut through to the key aspects of the book which perhaps … Continue reading
Torsion in the cohomology of co-compact arithmetic lattices
Various authors (including Bergeron and Venkatesh) have shown that the cohomology of certain arithmetic groups have a lot of torsion. For example, if \(\Gamma\) is a co-compact arithmetic lattice in \(\mathrm{SL}_2(\mathbf{C})\), and \(\mathcal{L}\) is an acyclic local system, then \(\log … Continue reading
Posted in Mathematics
Tagged Akshay Venkatesh, Iwasawa Theory, Matthew Emerton, Nicolas Bergergon, Ouroboros, Poincare Duality, torsion
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