Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with algebraic-curves
Search options not deleted
user 4008
for questions on one dimensional algebraic varieties over any field, including questions of moduli, and questions about specific curves.
13
votes
Extra automorphisms of curves and definability over \bar Q
Consider the more general case (just to lighten the notation) of a curve $X$ and
a group of automorphism $G$ (assumed to act faithfully). Consider the map $X
\rightarrow X/G$. This covering has a topo …
- 22.6k
14
votes
Accepted
Why is a general curve automorphism-free?
One way to do it is through deformation theory, provided we only consider
automorphism groups $G$ of order not divisible by the characteristic (one may of
course assume that it is cyclic of prime orde …
- 22.6k
12
votes
Accepted
Special divisors on hyperelliptic curves
Suppose that $D=x_1+x_2+\cdots+x_{g-1}$. We may assume that $\tau(x_i)\neq x_j$
for all $i\neq j$. Now, assume that $D'=y_1+\cdots+y_{g-1}$ is an element of
$|K-D|$. Then $x_1+x_2+\cdots+x_{g-1}+y_1+\ …
- 22.6k
26
votes
Accepted
Which 'well-known' algebraic geometric results do not hold in characteristic 2?
I am not going to add any new examples but suggest a systematic way of looking at examples. If one looks at special phenomena in characteristic $2$ one can classify them as follows (though this divisi …
- 22.6k