# seminar february 2013

Dear all,

You are cordially invited to attend the following activities of the Antwerp Algebra Seminar.

PLEASE NOTE THE CHANGED STARTING HOUR : 13.45

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Friday February 15th at 13.45h in room G0.05 (Middeheim campus) lecture by

Yong Hu (Essen) : “Some local-global problems related to quadratic forms”

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Friday February 22nd at 13.45h in room G0.05 (Middelheim campus) lecture by

Boris Shoikhet (Antwerpen) : “A new proof of the PBW property for Etingof-Ginzburg algebras with cyclic non-commutative potential”

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Friday March 1st at 13.45h in room G0.05 (Middelheim campus) lecture by

Can Zhu (Antwerpen) : “On the (co)homology of Frobenius Poisson algebras”

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Friendly greetings,

Wendy Lowen, Karim Becher, Boris Shoikhet and Lieven Le Bruyn.

# Antwerp Algebra Seminar – october 2012

You are cordially invited to attend the following activities of the Antwerp Algebra Seminar.

Friday october 5th at 16h in room G.005 (Middelheim campus), lecture by
Boris Shoikhet (UA) : “Deligne conjecture for higher-monoidal categories”

Friday october 12th at 16h in room G.005 (Middelheim campus), lecture by
Liyu Liu (UA) : “Twisted Calabi-Yau property of skew-polynomial extensions”

Friday october 19th at 16h in the hall of building G (Middelheim campus),
drink on the occasion of the retirement of Fred Van Oystaeyen and Guy Van Steen

Friday october 26th, one-day workshop in honor of Fred Van Oystaeyen’s 65th birthday
organizers : S. Caenepeel (VUB) and Y. Zhang (UHasselt), details follow

Friday november 2nd : university closed, no seminar.

With kind regards,

Wendy Lowen, Karim Becher, Boris Shoikhet and Lieven Le Bruyn

# noncommutative geometry seminar 2011

## what is #angs@t?

Welcome to #angs@t (pronounced ‘angst’), the group-blog accompanying the master-course ‘seminar noncommutative geometry’ given at Antwerp University (Belgium).

Clearly, ‘angs’ is short for Antwerp Noncommutative Geometry Seminar, and the addendum @t indicates that all tweets about the seminar should include the hashtag #angs. Such tweets will appear in the sidebar on the main page.

## practical info

The IRL-part of the seminar begins every friday around 13h in room G 0.16 (campus Middelheim) and ends sometime after 16h when exhaustion strikes lecturer and/or public. Normally lectures are given in Dutch unless the assembled public demands otherwise, in which case we effortless switch to pidgin English.

The virtual-part of the seminar happens here and on twitter, and will be entirely in English. Here, we will collaboratively try to write course-notes, using the EditFlow plugin. Anyone interested to contribute can send an email to lieven.lebruyn at ua.ac.be. If you have a twitter-account, please tweet about the seminar using the hashtag #angs.

# the plan

We will try to sketch an approach to the next biggest conjecture in number theory (after the Riemann hypothesis), the ABC-conjecture, using geometry over the field with one element $\mathbb{F}_1$ and noncommutative geometry.

Here’s a crude outline of the topics/papers we will cover (anticipate major changes):