Jizhan Hong

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Name	Jizhan Hong
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62

49

votes

10

answers

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Motivation for algebraic K-theory?

at.algebraic-topology algebraic-k-theory motivation kt.k-theory-homology

jun 14 11 at 14:25 Anil P 33●6

19

45

votes

6

answers

2k

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What properties make $[0,1]$ a good candidate for defining fundamental groups?

at.algebraic-topology homotopy-theory

mar 7 at 5:25 Keith Penrod 21●2

48

35

votes

3

answers

5k

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What’s the “Yoga of Motives”?

motives ag.algebraic-geometry

nov 23 11 at 6:13 Thomas Riepe 5,897●1●24●56

15

34

votes

8

answers

4k

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What is a continuous path?

gn.general-topology at.algebraic-topology graph-theory

jul 8 at 1:55 Valerio Capraro 3,595●11●25

9

15

votes

8

answers

935

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Examples of Brown (co)fibration categories that are not Quillen model categories?

at.algebraic-topology homotopy-theory

sep 30 11 at 11:18 Denis-Charles Cisinski 4,898●11●20

12

13

votes

4

answers

1k

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Is there a Galois correspondence for ring extensions?

ac.commutative-algebra commutative-rings galois-theory

jun 27 11 at 2:17 Jizhan Hong 326●1●7

9

10

votes

8

answers

868

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What are examples illustrating the usefulness of Krull (i.e., rank > 1) valuations?

valuation-theory ag.algebraic-geometry examples

feb 23 10 at 22:14 B A Sethuraman 91●3

4

5

votes

3

answers

453

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profinite spaces coming from profinite groups

reference-request profinite-groups gn.general-topology

jan 20 11 at 17:32 Stephen S 784●1●7●9