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Meta
Monthly Archives: February 2013
Stephen Fry
Never let it be said that this blog shies away from confronting sacred cows. Today’s target: Stephen Fry. In the video below, Fry tries to have his cake and eat it too — calling out grammar pedants for “showing off … Continue reading
Posted in Uncategorized
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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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