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For questions requesting examples of a certain structure or phenomenon
-3
votes
Jokes in the sense of Littlewood: examples?
The journal of unpublishable mathematics, which seems to be down at the moment is one of my favourites
1
vote
Best online mathematics videos?
All the talks of Atiyah 80+
2
votes
Best online mathematics videos?
David Cox's lectures in toric varieties at MSRI
Something really good to end the evening with :)
3
votes
4
answers
1k
views
Examples of divisors on an analytical manifold
In particular I would like to see examples of linear systems of divisors and how given a linear system of dimension $n$ I can choose a pencil inside it. …
4
votes
1
answer
3k
views
Ringed and locally ringed spaces
A pair $(X,O_X)$ is a ringed space if $X$ is a topological space and $O_X$ is a sheaf of rings. If every stalk $O_{X,x}$ is a local ring, then we say that $(X,O_X)$ is a locally ringed space.
In the …