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Mathematics
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Tryncha
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I'm only a student.

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question
4
If $g∘f$ is a homemorphism, then $g$ one-one (or $f$ onto) implies that $f$ and $g$ are homeomorphisms.
Oct 17, 2022
question
2
Let $G$ be a group and $a,b\in G$. Prove that $|a|=|a^{-1}|$ and that $|ab|=|ba|$. [duplicate]
Oct 6, 2019
question
2
Find maxima and minima of $xyz$ given $x+y+z=0$ and $x^2+y^2+z^2=1$
Nov 8, 2019
question
2
Prove using First Isomorphism Theorem
Feb 5, 2020
question
1
If I have a relation "$\sim$" which is symmetric and transitive, can I say that it is reflexive? [duplicate]
Oct 8, 2019
question
1
Determinate the furthest and nearest points on an ellipsoid from a plane
Nov 8, 2019
question
1
Prove that $f_0$ is not an inner point of $A$ relative to $\lVert\cdot\rVert_1$
Sep 30, 2022
question
1
Attempt to prove that the function $X\mapsto YXY^{-1}$ is an automorphism of $ \mathfrak{g}$.
Mar 9, 2023
question
0
Calculate volume of a solid bounded by two paraboloids
Nov 3, 2019
question
0
Prove that $\overline{X} =X\cup X'$
Nov 12, 2019