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Results tagged with algebraic-groups
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user 7108
Algebraic varieties with group operations given by morphisms, or group objects in the category of algebraic varieties, the category of algebraic schemes, or closely related categories.
5
votes
Accepted
Tangent space of a finite flat group scheme
This is correct. Here's another to see it (assume for simplicity we are working over a field $k$). Let $R_\epsilon : = k[\epsilon]/\epsilon^2$ and let $S_\epsilon:= Spec R_\epsilon.$ This is a scheme …
- 7,962
13
votes
Accepted
Can we use formal groups to recover Lie-theoretic representation theory in characteristic p?
The short answer is that the characteristic $p$ picture genuinely has more depth. In particular it's not correct to think of formal groups as "better" than Lie groups. In fact, they can be put on equa …
- 7,962