Version 5.0.0 of the DAZ Importer, MHX Runtime System and BVH and FBX Retargeter have been released. They can be downloaded from DAZ Importe...

The time has come to wrap up this series of posts. I went to grad school in the early 1980s, and specialized in phase transitions and critic...

Recall how we constructed representations of the multi-dimensional Virasoro algebra last week. Start from a classical representation acti...

Today I argue that quantum gravity must be a local theory. However, a well-known theorem asserts that there are no local observables in q...

The key lesson from general relativity is background independence. There is no classical background metric, but the metric is the gravita...

An extension of the diffeomorphism algebra is a kind of diff anomaly, but according to standard wisdom there are no diff anomalies at all in...

The diffeomorphism algebra is the gauge symmetry of classical general relativity. An extension thereof is hence a kind of gauge anomaly, whi...