Revision history [back]
 | 1 | initial version |
You have to define the manifold M with the keyword structure='pseudo-Riemannian', or structure='Riemannian' or structure='Lorentzian', see here.
| | 2 | No.2 Revision |
You have to define the manifold M with the keyword structure='pseudo-Riemannian', or structure='Riemannian' or structure='Lorentzian', then it has a volume form; see here.
