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Answers
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16
Can the circle be characterized by the following property?
13
Math puzzles for dinner
12
Thinking and Explaining
11
4900, a particularly square number
10
Probability of generating the symmetric group
10
Invertible matrices of natural numbers are permutations… why?
9
Can select many disjoint pairs with prescribed differences from Z_n?
9
The Problem about 2-coloring finite plane
8
The sparsest planar net that captures every unit segment
7
Experimental Mathematics
7
how can I minimise (n * y) (mod x) for known x and y, and for a given range of n?
7
Representation theory of $S_n$
6
Counting certain arrangements of n triangles. Does the count grow superexponentially?
6
How small can a sum of a few roots of unity be?
6
Examples where physical heuristics led to incorrect answers?
6
Is there an image for you that epitomizes mathematics?
5
Can a discrete set of the plane of uniform density intersect all large triangles? (3)
5
Finite subgroups of SL_2(Z) (reference request)
5
What would you want to see at the Museum of Mathematics?
5
Elementary+Short+Useful
5
What’s the difference between 2 and 3? (4)
5
minimal intersecting subsets
4
Classification of finite groups of isometries
3
Integral positive definite quadratic forms and graphs
3
Generating n-cycles
3
Real number happens to be an integer
3
On the existence of a sequence of positive continuous functions
3
Can we uniquely define a graph to have the topology of a polytope via proper edge length selection?
3
Efficient computation of the least fraction with square denominator greater than the square root of 2.
3
The Ramanujan Problems.
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