André Henriques

Mathematisch Instituut,
Universiteit Utrecht, Postbus 80.010
3508 TA Utrecht, The Netherlands.
Office: 506, phone: +31 30 2534790
e-meyl: A_⊕G_⊕henriques ⊗ uu_⊕nl, C.V. (last updated in 2008)
Topology group

I'm currently teaching Functies en Reeksen (WISB211).
Last semester, I thought complexe functies and wiskundige methoden voor physici.
Here's the webpage of the course functies en reeksen that I gave last year.
Some seminars that I led in the past: Operads and loop spaces (spring 09),
Stable homotopy theory (fall 08), Twisted K-theory (spring 08), and a link to the Utrecht staff colloquium.

Together with my MIT friends Chris Douglas, John Francis, and Mike Hill, I've organized the first four Talbot workshops.
This task has been taken over by John Francis, Owen Gwilliam, and Sheel Ganatra

blue = on the ArXiv. pink = not on the ArXiv.

A draft about Z/2-graded conformal nets and string structures (with A. Bartels and C. Dougals)

On String orientations, with Chris Douglas and Michael Hill.

A lecture by Mike Hopkins on MString → tmf.

The n-dimensional cube recurrence, with David Speyer.

Here's a picture indicating the ring structure of tmf at p = 2, and here's a survey on π_*(tmf) and on the Adams spectral sequence for tmf.
Here's an index of notations for J. Lurie's book Higher Topos theory.

Two years ago, I was a post-doc at Münster, in the topology group of Wolfgang Lück.

An action of the cactus group.

On the homotopy theory of orbispaces, with David Gepner.

CFT's associated to non-effective orbifolds, with Simeon Hellerman , Tony Pantev, Eric Sharpe, and Matthew Ando.

The periodicity of the bounded octahedron recurrence.

How to integrate L-infinity algebras. This 3 page abstract focuses more on the String group.

Gerbes on C/Z³, with Giovanni Felder, Carlo Rossi, and Chenchang Zhu.

Some notes on CW-orbispaces, and some on orbivariant K-theory.
Here's a one page handout on stacks.

Before, I was a grad student of Mike Hopkins at MIT.

My thesis (2005) is on orbispaces.

With Pavel Etingof, Eric Rains, and Joel Kamnitzer on the cohomology of the real locus of \bar Mo,n.

With Laurent Bartholdi and Volodia Nekrashevych on groups and automata .

With Joel Kamnitzer on a commutor for crystals, and on gl(n)-crystals.

With Tara Holm and Megumi Harada on T-equivariant generalised cohomology of G/P.

A picture of the subalgebra A(2) of the Steenrod algebra.

I was also a grad student of Allen Knutson at Berkeley.

On presentations of non-effective orbifolds, joint work with David Metzler.

On a definition of orbifolds that uses the Borel construction.

On a convexity property of amoebas of algebraic varieties.

Here's my qual syllabus.

Even before, I was an undergraduate in Geneva.

My undergraduate thesis with Vaughan Jones on the Ising model.

On a q-analogue of the notion of arithmetic polynomial.