| Original language | English |
|---|---|
| Publisher | arXiv |
| Number of pages | 36 |
| Publication status | Published - 29 Sept 2023 |
Bibliographical note
Article prepared for the second edition of the Encyclopaedia of Mathematical Physics, edited by M. Bojowald and R.J. Szabo, to be published by Elsevier.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver