As of May 31, 2023, we have updated our Code of Conduct.

Will Brian

Member for 8 years, 1 month
Last seen this week

wrbrian.wordpress.com
Charlotte, NC, United States

Summary

Reputation

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gn.general-topology

597/400 score

72/80 answers

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3

69

96

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Excavator

Answers

View all 154 answers

Score Activity Newest

122

Tweetable Mathematics

Apr 26, 2017

66

Bijection from the plane to itself that sends circles to squares

Apr 10, 2017

46

When can one continuously prescribe a unit vector orthogonal to a given orthonormal system?

Nov 5, 2018

42

Which popular games have been studied mathematically?

Jan 9, 2018

40

A topology on $\Bbb R$ where the compact sets are precisely the countable sets

Nov 21, 2016

Questions

View all 16 questions

Score Activity Newest Views

32

Can $[0,1]^4$ be partitioned into copies of $(0,1)^3$?

Aug 26, 2021

30

Is there a subset of the plane that meets every line in two open intervals?

Jul 9, 2015

20

If $S_\mathbb N$ is partitioned into finitely many pieces, must one piece contain a "skew copy" of every countable group?

Sep 2, 2019

14

Is there a countably infinite closed interval in the lattice of topologies?

Jan 12

13

Does van der Waerden's Theorem hold for $\omega_1$?

May 18, 2015

Tags

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set-theory

690

Score

95

posts

gn.general-topology

597

Score

81

posts

lo.logic

164

Score

15

posts

real-analysis

144

Score

15

posts

cardinal-characteristics

118

Score

18

posts

Reputation

+95

Uniformization of almost disjoint families

+60

Is every rational sequence topology homeomorphic?

+10

Can all uncountable (but small) families of sets with positive measure have an uncountable subfamily with an intersection of positive measure?

+10

Bounds for a covering number of the circle group $\mathbb T$ by some its small subgroups

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Jun 7, 2018
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Apr 30, 2019
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Sep 4, 2018

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Feb 1
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May 22, 2020
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Mar 19, 2020

96

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gn.general-topology

Sep 9, 2016
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Jan 29, 2020
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Nov 21, 2016

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2,726

upvotes

62

downvotes

1,046

question votes

1,742

answer votes

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