Timeline for Tannakian fundamental group for finitely linear representation of group
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Dec 26, 2012 at 13:52 | comment | added | Donu Arapura | I'm not sure about the origin of the notion either, but certainly "pro-algebraic hulls" can be at least traced back to Hochschild & Mostow, Pro-affine algebraic groups, Amer. J. Math 1969. | |
| Dec 26, 2012 at 0:51 | comment | added | Qiaochu Yuan | The (maximal) spectrum is of an $I$-indexed product of copies of a field $k$ contains, and ought to just be equal to, the Stone-Cech compactification $\beta I$ of $I$ (sketch: look at what happens to idempotents); identifying $\beta I$ with the set of ultrafilters on $I$, the quotient by the maximal ideal corresponding to an ultrafilter is the corresponding ultrapower of $k$. | |
| Dec 26, 2012 at 0:35 | history | answered | S. Carnahan♦ | CC BY-SA 3.0 |