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# Questions

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### Non isomorphic finite rings with isomorphic additive and multiplicative structure

sep 2 11 at 23:38 Mark Sapir 28k257120

4
13
4
2k
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### Example of the completion of a noetherian domain at a prime that is not a domain

may 13 at 7:30 Sándor Kovács 23.8k25373

2
11
1
942
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### Do these conditions on a semigroup define a group?

jun 10 10 at 18:49 Arturo Magidin 2,72111225

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9
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2k
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### Characterizations of UFD and Euclidean domain by ideal-theoretic conditions

feb 15 10 at 19:38 Pete L. Clark 40k4103227

3
7
1
197
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### Varieties of groups with infinite relatively free group of rank 2 finite, infinite in rank 3

oct 21 11 at 20:01 Mark Sapir 28k257120

2
2