This interesting-looking preprint has just appeared on ArXiv:

Theo Johnson-Freyd,

Heisenberg-picture quantum field theory, arXiv:1508.05908

It argues for a different category-theoretical formalism for TQFT than the `

122 more wordsThis interesting-looking preprint has just appeared on ArXiv:

Theo Johnson-Freyd,

Heisenberg-picture quantum field theory, arXiv:1508.05908

It argues for a different category-theoretical formalism for TQFT than the `

122 more wordsOne of the main ways in which I keep my finger on the pulse of what is hot now in low dimensional topology is to write lots and lots of reviews, both for… 743 more words

The simplest quantum 3-manifold invariant is the Murakami-Ohtsuki-Okada (MOO) invariant. It comes from Chern-Simons theory in the way that the Reshetikhin-Turaev invariant comes from Chern-Simons Theory. 1,270 more words

Check out this exciting new preprint by Vaughan Jones!

1,004 more wordsV.F.R. Jones, Some Unitary Representations of Thompson’s Groups and , arXiv:1412.7740.

I’ve recently been looking at the following paper in which -TQFT anomalies are treated carefully and various old constructions of Turaev and Walker are elucidated: 1,082 more words

Relaxing from my forays into information and computation, I’ve recently been glancing through my mathematical sibling Kenta Okazaki’s thesis, published as:

987 more wordsK. Okazaki, The state sum invariant of 3â€“manifolds constructed from the linear skein.

Avishy Carmi and I are in the process of finalizing a preprint on what we call “tangle machines”, which are knot-like objects which store and process information. 1,374 more words