Timeline for What are important examples of filtered/graded rings in physics?
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 4, 2010 at 21:27 | vote | accept | Jan Weidner | ||
| Jan 4, 2010 at 21:28 | |||||
| Jan 4, 2010 at 21:27 | comment | added | Jan Weidner | Thanks for your answer, and thanks for inspiring José Figueroa-O'Farrill! | |
| Jan 4, 2010 at 21:03 | comment | added | David Ben-Zvi | Filtered algebras give deformations of their associated gradeds which are C^* invariant. In particular they have the feature that the family is constant up to isomorphism once you remove h=0. They also have the feature that the deformation extends (trivially) to all values of the Planck constant. These are not features of general deformation quantizations. (In fact in great generality filtered objects are the same as objects over the affine line which are equivariant with respect to the multiplicative group.) | |
| Jan 4, 2010 at 16:57 | history | answered | Mariano Suárez-Álvarez | CC BY-SA 2.5 |