dREaM
Reputation
38,519
97/100 score
 1d revised Prove that a one-color $K_4$ exists in a two-color $K_{18}$ edited body 1d revised Is $\mathbb{Z}[x]/(x^2 + x + 1, 9)$ isomorphic to $\mathbb{F}_{81}$? deleted 2 characters in body 2d revised Seeking non-inductive, combinatorial proof of the identity $1^2 + 2^2 + 3^2 + \cdots + n^2 = \frac{n(n + 1)(2n + 1)}{6}$ added 152 characters in body Feb 1 revised How many numbers between $0$ and $1,000,000$ have exactly one digit equal to $9$ and the sum of digits equal $13$? deleted 1 character in body Feb 1 revised How many numbers between $0$ and $1,000,000$ have exactly one digit equal to $9$ and the sum of digits equal $13$? added 186 characters in body Feb 1 revised Is there an expression for the sum of $\binom nr^2$ for each $n$? added 2 characters in body Feb 1 revised Find the remainder when ${{5^5}^5}^5$ is divided by $24$ added 1 character in body Feb 1 revised Find the remainder when ${{5^5}^5}^5$ is divided by $24$ added 6 characters in body Feb 1 revised Find the remainder when ${{5^5}^5}^5$ is divided by $24$ added 358 characters in body Feb 1 revised Mathematical usage of “$\dots$” during enumeration, is it ok to be imprecise? added 1 character in body Jan 31 revised Is there an expression for the sum of $\binom nr^2$ for each $n$? added 329 characters in body Jan 31 revised Numbers written as $a^b+b$ for $a,b\geq 2$ added 12 characters in body Jan 31 revised Numbers written as $a^b+b$ for $a,b\geq 2$ deleted 22 characters in body Jan 31 revised Numbers written as $a^b+b$ for $a,b\geq 2$ added 2 characters in body Jan 31 revised Numbers written as $a^b+b$ for $a,b\geq 2$ added 369 characters in body Jan 31 revised Sequence $\left\{ x_{n}\right\} _{n\geq1}$ s.t $\left|x_{n+1}-x_{n}\right|<2^{-n}$ for all $n\geq N$ , does this imply convergence? added 10 characters in body Jan 31 revised Give a complete set of equivalence class representatives for an equivalence relation on the natural numbers (including zero) added 1 character in body Jan 31 revised can we find a $k_4$ colored with 1 color in a $k_8$ which is colored with just 2 colors? added 349 characters in body Jan 21 revised Adjacency Matrix of a Graph Length of Paths Proof edited body Jan 20 revised Determine the following property added 4 characters in body