Dan Rust

Member for 11 years, 1 month
Last seen this week

sites.google.com/view/danrust
Milton Keynes, UK

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homology-cohomology

99/100 score

30/20 answers

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Answers

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Score Activity Newest

53

An intuitive idea about fundamental group of $\mathbb{RP}^2$

May 6, 2013

44

Unit sphere in $\mathbb{R}^\infty$ is contractible?

Jan 19, 2013

44

What is the mathematical significance of Penrose tiles?

May 6, 2014

41

Does $G\cong G/H$ imply that $H$ is trivial?

Sep 11, 2013

41

What are the most overpowered theorems in mathematics?

Nov 7, 2013

Questions

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Score Activity Newest Views

156

Slice of pizza with no crust

Sep 1, 2013

98

Geometric way to view the truncated braid groups?

Jun 3, 2013

37

Homeomorphic to the disk implies existence of fixed point common to all isometries?

Sep 20, 2013

27

Examples of falsified (or currently open) longstanding conjectures leading to large bodies of incorrect results.

Mar 31, 2013

26

Does taking the direct limit of chain complexes commute with taking homology?

May 24, 2013

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algebraic-topology

609

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224

posts

general-topology

487

Score

196

posts

group-theory

250

Score

62

posts

geometry

202

Score

51

posts

homotopy-theory

160

Score

43

posts

Reputation

+10

An intuitive idea about fundamental group of $\mathbb{RP}^2$

+10

inductive set question

+10

Intuition behind a proof showing a square is homeomorphic to a quotient of an interval

+10

Finite strings of integers from $\{1,1,2,2,\ldots,n,n\}$ such that there are $k$ elements between the two $k$s

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Sep 2, 2013
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Dec 28, 2015
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algebraic-topology

Nov 2, 2016
general-topology

Mar 8, 2019
Convention

Jan 7, 2014

102

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fundamental-groups

Oct 6, 2020
homotopy-theory

Apr 17, 2016
geometry

Aug 13, 2014

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