Mathematics
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leoli1

Apparently, this user prefers to keep an air of mystery about them.

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15 What's the most elementary way to solve this trigonometric problem? Jan 2
13 Is every injective ring homomorphism an automorphism? Jan 29
8 If for every sequence $(x_n)$, $x_n \to x_0 \implies (f(x_n))$ is a Cauchy sequence, then is $f$ continuous? Jan 20
8 Prove that $\angle AEF =90^\circ$ given a square $ABCD$ Feb 8
7 Let $G$ be a group with $|G|=102 ( = 2 \cdot 3 \cdot 17)$, with $|Z(G)| = 2$. Prove the following: Jan 22
7 $S^{n + m}$ is not homeomorphic to $M \times N$ Jan 8
7 If $\lim_{x \to a} f\left(x\right) = L$ then does $\lim_{x \to L} f^{-1}\left(x\right) = a$ Jan 15
6 Is every normal subgroup of $G$ of this form? Jan 17
6 Prove that $E[F]$ is not a field. Jan 29
6 “Reducing” spliting fields Jan 28
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