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This page is the home of the Xtraordinary cohomology theory & K-theory Collective Discussion group^*. Basically, we'll just be discussing things that we think are cool in algebraic topology. (To that end, please let me know if you'd like to give a talk.) Everyone is welcome to attend. However, this really will be a discussion group and not a seminar. Talks will be unpolished; questions, long digressions, and ample coffee/lunch breaks will be encouraged.

All talks at Berkeley are on Berkeley time (i.e. they start 10 minutes late).

The xkcd group is in hibernation while two of its three founding members are studying abroad. We'll be back eventually! In the meantime, please peruse the archives.

^* the xkcd group -- making xkcd not stand for nothing since 2010!