10 Find two square roots a 2 by 2 matrix filled with twos 8 Probability - Length of an arc which contains a fixed point 7 How to find the solution to this system of integer variables? 7 Convincing others that the method of finding the inverse function is valid 7 A proportionality puzzle: If half of $5$ is $3$, then what's one-third of $10$?

### Reputation (5,673)

 +5 Conditions that ensure a bounded probability density function +10 $R$ local ring, $I$ maximal ideal then $x\notin I$ implies $x$ unit +5 General linear group is an affine variety -2 Probability of a four letter word from a sequence of n random letters

### Questions (52)

 6 Orbits of algebraic groups (dimension of connected components) 5 Rank of sum of matrix and arbitrarily small matrix 5 Existence of an almost surely convergent subsequence. 5 General linear group is an affine variety 4 Limit of sum of iid sequences

### Tags (182)

 66 probability × 51 26 elementary-set-theory × 8 41 sequences-and-series × 24 25 abstract-algebra × 21 37 real-analysis × 29 20 statistics × 19 34 probability-distributions × 22 18 linear-algebra × 14 30 calculus × 21 17 puzzle × 4