Question

Anybody know how to make a sheaf from a presheaf?

Answer 1

get the post sheaf and reverse engineer it :)

Answer 2

No seriously, do you have a clue about etale spaces?

Answer 3

i aint got a clue what a sheaf is at the moment

Answer 4

It's an abstract object in differential topology.

Answer 5

hmmm .... i tiptoed into topology with an abstract algeabra book once; saw a torus and figured since im a pisces that i better not try my luck

Answer 6

:-D what do you mean by pisces? fish??

Answer 7

yep, im a march baby :)