Skip to main content
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
Search options not deleted user 450

Questions asking for the intuition behind some definition, conjecture, proof etc. In other words, questions designed to improve or to acquire understanding on a conceptual or intuitive level, as opposed to on a technical or formal level. When asking such a question it can be helpful to include a rough description of ones understanding of the subject at hand (on a technical level).

35 votes
Accepted

A geometric characterization for arithmetic genus

First let me note that there is an unfortunate clash in terminology: the arithmetic genus of a smooth complex projective variety $X$ of dimension $n$ can mean either a) The number $\chi (X, \mathca …
Georges Elencwajg's user avatar
16 votes

Proof synopsis collection

Fermat's little theorem: $n^p\equiv n \; (mod \;p)$ for $p$ prime and all integers $n$. Synopsis of proof: Reduce to nontrivial case where $p$ doesn't divide $n$, interpret as equality in field of $p …
David Roberts's user avatar
  • 35.5k
61 votes

Intuition for Group Cohomology

Here is a completely elementary example which shows that group cohomology is not empty verbiage, but can solve a problem ("parametrization of rational circle") whose statement has nothing to do with c …
Georges Elencwajg's user avatar
5 votes

Most helpful heuristic?

Dear harrison, in complex geometry there is Oka's principle. It says that on a stein manifold, if there is no obstruction to a continuous construction there will be no obstruction to a holomorphic c …
Georges Elencwajg's user avatar