Douglas Zare's user avatar
Douglas Zare's user avatar
Douglas Zare's user avatar
Douglas Zare
  • Member for 14 years, 3 months
  • Last seen more than a month ago
19 votes
Accepted

Determinants of "almost identity" matrices.

19 votes
Accepted

Does $X$ embed in $Y$, and $Y$ embed in $X$, always imply that $X$ isomorphic onto $Y$?

19 votes
Accepted

Sane bound on number of moves for Maker-Breaker game on $\mathbb R^2$ for $\{0,1,2,3,4\}$

19 votes
Accepted

Smallest tile to tessellate the hyperbolic plane

18 votes

Fiction books about mathematicians?

18 votes
Accepted

Can the sum of two roots of unity be a root of unity?

18 votes

Why are the sporadic simple groups HUGE?

17 votes

Math paper authors' order

17 votes

Experimental mathematics leading to major advances

16 votes

Longest coinciding pair of integer sequences known

16 votes
Accepted

Longest of random worm-like paths in $\mathbb{Z}^2$

15 votes

Applications of Brouwer's fixed point theorem

15 votes

probability puzzle - selecting a person

15 votes

Linear algebra proofs in combinatorics?

15 votes

Dividing a square into 5 equal squares

15 votes

Which popular games are the most mathematical?

15 votes
Accepted

An unfair game involving an odd number of pieces of chocolate

15 votes
Accepted

Probability that random weights on $K_n$ satisfy triangle inequality

14 votes

Probability that a stick randomly broken in five places can form a tetrahedron

14 votes

17 camels trick

13 votes
Accepted

(Non)existence of mirrors with more than two foci

13 votes

An example of a beautiful proof that would be accessible at the high school level?

13 votes

What are the applications of immanants?

12 votes

Efficient visibility blockers in Polya's orchard problem

12 votes

Probability theory and measuring the true strength of chessplayers

12 votes
Accepted

The probability for a sequence to have small partial sums

12 votes

Can We Decide Whether Small Computer Programs Halt?

12 votes
Accepted

Sum of the reciprocal of perfect numbers

12 votes
Accepted

Does a 10-element set have 30 3-element subsets such that each pair is in two of these 30 subsets?

12 votes
Accepted

Irrationality proof technique: no factorial in the denominator

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