Category Archives: Uncategorized

Hyperbolic Surfaces

Ok, with the hyperbolic plane and its metric and geodesics out of the way, we can start getting into some surface theory.

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The hyperbolic plane

So, I know I usually talk about strictly algebraic geometry stuff, but the moduli of curves lives in an interesting place.  It’s both an algebraic and an analytic object.  So we’re going to start by talking a bit about hyperbolic … Continue reading

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New Series: Moduli of Riemann Surfaces

Though I’m not quite ready to start (next week!) I feel that, in the spirit of Jim getting back to the blogging and my continued promises, I’d announce my series now.  I’m going to start a detailed series on the … Continue reading

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The torsion on CM elliptic curves over prime degree number fields

It’s good to be back! This weekend I’m going to Paris to give a talk in the London-Paris Number Theory seminar so I’m going to give a preview of that talk, based on joint work with Pete Clark and Abbey Bourdon. … Continue reading

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I know I’ve said it before, but…

Rigorous Trivialities will be returning! Not immediately, but it will be.  I’m reorganizing a bit, and as I’m going to be contributing to a blog for the general public via the Kavli Foundation, I’m also going to try to revive … Continue reading

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The sound you hear is another conjecture in birational geometry dropping like a fly

These are interesting times to look over the algebraic geometry arxiv postings. Just over a week ago, there was a posting by Tanaka which claimed the minimal model program was false in characteristic two. Then yesterday at the top of … Continue reading

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Oops and Yay

First, the oops.  I DID intend to blog from Berlin.  Didn’t happen, got caught up in giving talks and starting collaborations.  It happens.  I MAY be posting again in the next couple of months, but I’m only back home for … Continue reading

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