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# 47 Reviews

 Aug6 reviewed Close Simplifying this sigma notation Jan10 reviewed Approve A convolution like integral equation Jan8 reviewed Approve What's the explanation for why n^2+1 is never divisible by 3? Jan7 reviewed Reviewed Modular Arithmetic with Indices Jan7 reviewed Close Consider the set $E = \{0,1,2\}$, compute $\operatorname{card}(E\cup P(E))$. Jan7 reviewed Close Prove that unity of two subspaces is a subspace if and only if one is a subspace of the other Jan7 reviewed Close How does the sum of the series “$1 + 2 + 3 + 4 + 5 + 6\ldots$” to infinity = “$-1/12$”? Jan7 reviewed Close second derivative question Jan7 reviewed Close Prove that $x^n - y^n = (x-y) (x^{n-1}+x^{n-2}y\,+ \,\,…\,\,+ y^{n-1})$ Dec27 reviewed Close Don't be Greedier Dec24 reviewed Close Semigroups isomorphism Dec12 reviewed Reviewed Probability of 100 coin tosses Dec12 reviewed Leave Closed Let $A$ be an abelian group. Show that $\mathrm{Hom}(\mathbb Z, A)$ is isomorphic to $A$. Dec12 reviewed Reopen The area bound by the curve and its tangent. Dec12 reviewed Reopen Mean square integrable Dec12 reviewed Close Cesaro means and equivalent sequences Dec12 reviewed Close Express $\cos$ and $\sin$ values Dec12 reviewed Close What are the implications of Prime Number Theorem in Cryptography? Dec12 reviewed Close Limit of $\sqrt{x^2-6x+7}-x$ as x approaches negative infinity Dec12 reviewed Leave Open Spring Constant -> Create second order equation