List questions from combinatorial-geometry

Published on 26 Aug 2013 - 16:37

1.3k

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Squaring rectangles

Published on 27 Mar 2026 - 22:52

1.8k

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Circles on the plane such that every line intersects at least one of them but no line intersects more that 100 of them

Published on 27 Mar 2026 - 13:48

631

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Is the figure the circumference of a unit circle?

Published on 01 Sep 2013 - 12:29

310

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Configurations of N tiles on MxM grid, up to rotation/translation?

Published on 27 Mar 2026 - 19:44

126

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How to prove that $5$ unit hypercubes cannot be positioned to cover a unit hypersphere?

Published on 03 Sep 2013 - 0:57

1.4k

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Proving a point inside a triangle is no further away than the longest side divided by $\sqrt{3}$

Published on 08 Sep 2013 - 5:47

1.1k

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Fitting cubes inside a bigger cube

Published on 27 Mar 2026 - 3:48

255

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Question related to Desargues' Theorem

Published on 27 Mar 2026 - 14:10

9.3k

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How many circles of radius r fit in a single bigger circle of radius R?

Published on 27 Mar 2026 - 3:44

38

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Choosing vectors on a complex sphere

Published on 17 Sep 2013 - 22:27

90

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Choosing sets of vectors on a complex sphere

Published on 26 Mar 2026 - 6:32

444

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Set of points in the plane which is intersected by every line on the plane and in which no more than K points are collinear

Published on 23 Sep 2013 - 17:55

2.8k

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An Olympiad Problem (tiling a rectangle with the L-tetromino)

Published on 27 Mar 2026 - 19:42

237

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Is this curve the circumference of a circle?

Published on 05 Oct 2013 - 14:36

List Question

n-simplex in an intersection of n balls

Squaring rectangles

Circles on the plane such that every line intersects at least one of them but no line intersects more that 100 of them

Is the figure the circumference of a unit circle?

Configurations of N tiles on MxM grid, up to rotation/translation?

How to prove that $5$ unit hypercubes cannot be positioned to cover a unit hypersphere?

Proving a point inside a triangle is no further away than the longest side divided by $\sqrt{3}$

Fitting cubes inside a bigger cube

Question related to Desargues' Theorem

How many circles of radius r fit in a single bigger circle of radius R?

Choosing vectors on a complex sphere

Choosing sets of vectors on a complex sphere

Set of points in the plane which is intersected by every line on the plane and in which no more than K points are collinear

An Olympiad Problem (tiling a rectangle with the L-tetromino)

Is this curve the circumference of a circle?

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