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lennon310

Working on large scale distribute systems

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5 How to compute $i^i$? Jan 13 '14
4 Let $a_1,a_2,\cdots,a_n$ be $n$ numbers such that $a_i$ is either $1$ or $-1$.If $a_1a_2a_3a_4+\cdots+a_na_1a_2a_3=0$ then prove that $4\mid n$. Jan 13 '14
4 Representation of integers as powers of the golden ratio Jan 14 '14
4 Suppose $2^n$ and $5^n$ start with the same digit $d$, for some $n\ge 1$.Find $d$. Jan 12 '14
4 Minimum L1 norm may not obtain the sparsest solution? Jan 11 '14
3 Let $a, b$ integers such that $ab+2a+3b=93$. Find all solutions integers. Nov 30 '19
2 Recursive determinant of given matrix in $\mathbb{R}^{n\times n}$ Jan 12 '14
2 Prove rigorously that $4n^2 - 2 \geq 2n$ for $n \geq 1$ Dec 4 '20
2 Existence of an orthogonal matrix that converts $AB$ to $BA$ Jan 12 '14
1 Demonstrating a Unitary Matrix is Special Jan 12 '14
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