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# geometric meaning of (co)homology groups

## Question

The algebraic definition of homology/cohomology groups are well known. The geometric motivation for them is much harder to come by in the standard textbooks. An entry that explains the geometric idea behind these groups with examples and some pictures would be very nice.

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## Comments

## What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?

## Re: What kind of cohomology did you have in mind?