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teil
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question
61
Why is the Hahn-Banach theorem so important?
May 31, 2010
question
47
What are the reasons for considering rings without identity?
Apr 26, 2010
question
30
Are there situations when regarding isomorphic objects as identical leads to mistakes?
May 12, 2010
question
29
What are some mathematical concepts that were (pretty much) created from scratch and do not owe a debt to previous work?
Apr 16, 2010
question
29
Why is it so difficult to write complete (computer verifiable) proofs?
May 11, 2010
question
25
What was Galois theory like before Emil Artin?
May 31, 2010
answer
21
What are some mathematical concepts that were (pretty much) created from scratch and do not owe a debt to previous work?
Apr 18, 2010
question
21
What are the advantages of phrasing results in terms of exact sequences and commutative diagrams?
Apr 18, 2010
question
21
Why are noetherian rings such natural objects in algebraic geometry?
Jul 2, 2011
question
18
Why are modular forms (usually) defined only for congruence subgroups?
Apr 16, 2010