deinst
Reputation
3,467
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
14 26
Impact
~94k people reached

• 0 helpful flags
• 71 votes cast

 27 What is a good book for learning math from the ground up? 14 All positive integer solutions to $\frac{1}{x_1}+\frac{1}{x_2}+\cdots+\frac{1}{x_n}+\frac{1}{x_1 x_2 \cdots x_n}=1$ 11 Inequality: $(x + y + z)^3 \geq 27 xyz$ 10 Produce unique number given two integers 10 Prove that integer $n$ exists such that $n^2$ begins with $201120122013$.

### Reputation (3,467)

 +20 What is a good book for learning math from the ground up? +5 What is the sum of the squares of the differences of consecutive element of a Farey Sequence +10 Something related to Frobenius coin Problem/Chicken McNugget Theorem +5 Cutting sticks puzzle

### Questions (12)

 73 Cutting sticks puzzle 10 What is the sum of the squares of the differences of consecutive element of a Farey Sequence 8 Count of numbers where both $n$ and $n+1$ have all prime factors less than $x$ 7 Strange factorial identity 6 Constructive algorithm for Minkowski's theorem.

### Tags (77)

 51 number-theory × 14 27 soft-question 38 combinatorics × 19 23 algorithms × 12 27 algebra-precalculus × 5 20 probability × 21 27 reference-request × 2 19 diophantine-equations × 3 27 book-recommendation 14 statistics × 12

### Accounts (11)

 Stack Overflow 9,216 rep 2341 Mathematics 3,467 rep 1426 Cross Validated 815 rep 58 Theoretical Computer Science 241 rep 24 Computer Science 161 rep 4