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Questions

14
20
votes
6
answers
4k
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Good lattice theory books?

dec 10 10 at 0:53 William DeMeo 576310

11
18
votes
25
answers
3k
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Problems where we can’t make a canonical choice, solved by looking at all choices at once

feb 17 11 at 17:16 Marty 6,74621539

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15
votes
4
answers
2k
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Intuitive explanation of Burnside’s Lemma

dec 21 10 at 7:36 Zhen Lin 1,8251511

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20
votes
7
answers
2k
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Generalizations of “standard” calculus

apr 1 12 at 20:05 kovsar 111

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15
votes
6
answers
2k
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Consequences of not requiring ring homomorphisms to be unital?

dec 23 11 at 3:07 Benjamin Steinberg 10.7k11449

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6
votes
11
answers
1k
views

Various concepts of “closure” or “completion” in mathematics

feb 25 10 at 8:23 gowers 17.8k977130

2
6
votes
3
answers
1k
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If K/k is a finite normal extension of fields, is there always an intermediate field F such that F/k is purely inseparable and K/F is separable?

jul 11 11 at 16:16 Georges Elencwajg 24.3k65132

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11
votes
2
answers
1k
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Are the field norm and trace the unique “nice” maps between fields?

jul 11 at 18:54 KConrad 17k361117

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17
votes
5
answers
1k
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MaxSpec, Spec, … “RadSpec”? Or, why not look at all radical ideals?

jun 27 11 at 23:47 Martin Brandenburg 29.1k245129

6
11
votes
4
answers
975
views

measure spaces as presheaves?

may 25 10 at 7:15 Buschi Sergio 1,799138

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