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Shiquan Ren's user avatar
Shiquan Ren's user avatar
Shiquan Ren's user avatar
Shiquan Ren
  • Member for 11 years, 2 months
  • Last seen more than 2 years ago
  • Homeless
2 votes
1 answer
275 views

can the actions of fundamental groups annihilate homology?

2 votes
1 answer
695 views

homeomorphism type of punctured real projective spaces

1 vote
1 answer
240 views

free group actions on a contractible topological space [closed]

1 vote
1 answer
226 views

can we take skeletons of covering maps to give new covering maps?

1 vote
1 answer
305 views

isotopy equivalence (topological meaning) between $CW$-complexes

1 vote
0 answers
101 views

coefficient of homology of configuration spaces over real projective spaces

1 vote
1 answer
108 views

vector bundles induced by an action of a finite subgroup of $O(n)$

1 vote
1 answer
614 views

cohomology of orthogonal group of integers

1 vote
1 answer
375 views

configuration spaces of real projective space

1 vote
1 answer
214 views

Chern classes of three (two) dimensional complex vector bundles

1 vote
1 answer
261 views

permutation action on cohomology of Stiefel manifolds

1 vote
1 answer
2k views

ideals of polynomial ring of two variables generated by two elements

1 vote
1 answer
285 views

a problem about ideals of polynomial rings

1 vote
1 answer
471 views

cup-length of the first Chern class of complex grassmannian

1 vote
1 answer
293 views

Unordered configuration space of $\mathbb{R}P^1$

1 vote
1 answer
299 views

torsion part of the cohomology module of configuration spaces of manifolds

1 vote
0 answers
126 views

cohomology ring of compact submanifolds of Euclidean spaces

0 votes
1 answer
779 views

unordered configuration space of pointed space

0 votes
1 answer
177 views

iterated loop spaces and configuration spaces [closed]

0 votes
1 answer
192 views

cohomology algebra of unordered configuration space on Euclidean space

0 votes
1 answer
328 views

group actions on fibre bundles

0 votes
1 answer
148 views

packing numbers and configuration spaces of the torus

0 votes
0 answers
87 views

packing numbers of the unit balls in Euclidean spaces and the dimensions

-2 votes
1 answer
314 views

configuration space and iterated loop space

-2 votes
1 answer
291 views

stable splitting into a wedge sum [closed]

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