Michi’s blog » archive for 'Travel'

Tour dates

  • March 6th, 2008

Edited to add Galway

I’ll be doing a “US tour” in March / April. For the people who might be interested - here are my whereabouts, and my speaking engagements.

I’m booked at several different seminars to do the following:

Title: On the computation of A-infinity algebras and Ext-algebras
Abstract:

For a ring R, the Ext algebra Ext_R^*(k,k) carries rich information about the ring and its module category. The algebra Ext_R^*(k,k) is a finitely presented k-algebra for most nice enough rings. Computation of this ring is done by constructing a projective resolution P of k and either constructing the complex Hom(P_n,k) or equivalently constructing the complex Hom(P,P). By diligent choice of computational route, the computation can be framed as essentially computing the homology of the differential graded algebra Hom(P,P).

Being the homology of a dg-algebra, Ext_R^*(k,k) has an induced A-infinity structure. This structure, has been shown by Keller and by Lu-Palmieri-Wu-Zhang, can be used to reconstruct R from
Ext_R^{\leq 2}(k,k).

This is a preview of Tour dates. Read the full post (286 words, 8 images)

Calling all San Diego participants and Californians

  • December 20th, 2007

I’ll be in San Diego for the AMS-MAA Joint Mathematics Meetings, January 5-11. I would be happy to meet up with cool people, blog readers, blog writers and what not - regardless of whether you actually will participate in the meeting or not. Drop me an email (contact data in the [about] page here) and we’ll coordinate something.

Also, I’ll be speaking twice. Come listen - if you dare. ;)

(70 words)

Settling in in Sydney

  • September 18th, 2007

No mathematical content today. However, I do note that the mathematics department in Sydney is located in a building as drab and boring as the Stockholm University main building. Its main architectural feature is the pale, washed out blue panels on the upper parts of the hollow concrete slab.

Just a short way away, though, we find the Quadrangle - a cathedral in the religion of learning, and the main building of Sydney campus. Complete with stained glass windows and stucco heraldic designs, all dedicated to the branches of scholarship.

Alas, the splendour suffers slightly from the extensive road construction work, which has just about managed to fence in and tear up almost all the tarmac in this corner of campus.

(122 words)

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Michi is a PhD student working in homological algebra. This blog is his outlet for texts with some manner of thought put into them. Over at his LiveJournal intimate details and streams of consciousness might be found.
Not all here is mathematics. All here, though, are my personal thoughts and opinions. Please read the about page (linked above) for more details.
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