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user5280911

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

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  • Member for 5 years, 6 months
  • 74 profile views
  • Last seen Feb 17 at 1:35

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11 What does it mean to take the gradient of a vector field? Apr 8 '17
3 Is (+∞)(−∞) undefined? Why? Oct 27 '20
3 How to get the coefficients of Taylor series in several variables when sums are grouped by order of partial derivatives Jan 14
2 Possessing derivative for a complex function of a complex variable vs Being differentiable for a corresponding $\Bbb R^2\to\Bbb R^2$ function Jan 11
2 Understanding why a generalized inverse of a right-continuous function is right-continuous Oct 30 '20
2 Is Radon-Nikodym derivative with respect to a finite measure real-valued a.e.? Oct 31 '20
1 How to prove simple transitivity from faithful transitivity immediately from stabilizers? Nov 9 '20
1 $H$ and $K$ are two normal subgroups of group $G$, $H\cap K=\{1\}$, $G=HK$, how to prove $G$ is isomorphic to $H\times K$ Nov 19 '20
1 Sum of decomposition coefficients of collinear points is $1$, but here seems to be a violation. Nov 26 '20
1 A operator is unitary if and only if it is a surjective isometry Sep 7 '20
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