Timeline for Why is the spin group needed to define the Dirac operator?
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| when toggle format | what | by | license | comment | |
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| 3 hours ago | history | became hot network question | |||
| 6 hours ago | answer | added | Roland F | timeline score: 4 | |
| 21 hours ago | comment | added | Nalline | @QuaereVerum ah so you need the equivariance to make the chart-changes consistent? So since I have a global chart on $\mathbb{R}^2$, I am not "forced" to consider this representation? Then my example would indeed have been too simple | |
| 21 hours ago | comment | added | Quaere Verum | In differential geometry, you either have to define an object globally on a smooth manifold, or locally together with its transformation rules. Otherwise there's no globally defined object. You have defined the local object, but you haven't specified its transformation rules. | |
| 21 hours ago | history | asked | Nalline | CC BY-SA 4.0 |