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user717
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What can't be described by categories?
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Examples and intuition for arithmetic schemes
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Global fields: What exactly is the analogy between number fields and function fields?
Poonen's table is awesome.
answered
Global fields: What exactly is the analogy between number fields and function fields?
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 Teacher
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Sheaf cohomology and injective resolutions
Not a stupid question! I have edited my above post.
revised
Sheaf cohomology and injective resolutions
added 1216 characters in body; added 1 characters in body
answered
What is a cup-product in group cohomology, and how does it relate to other branches of mathematics?
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Sheaf cohomology and injective resolutions
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