Monthly Archives: July 2013

The blind leading the blind: adventures in online education at duolingo

We interrupt our regular programming for a bit of amusement. The background for this is that I am considering developing an online calculus class (not a MOOC for now, rather something more modest), and so I have been thinking a … Continue reading

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Symmetric products II

Continuing the previous post, I now want to outline how the symmetric product picture can be used to give an easier proof that in PFH (and we can later explain how to do something similar for ECH). (The current proof … Continue reading

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Symmetric products I

As promised a long time ago, I would now like to explain how certain aspects of the definition of ECH can be motivated by thinking about symmetric products of surfaces. Also, this point of view suggests a simpler proof that … Continue reading

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