Alexei Averchenko

Member for 13 years
Last seen more than a month ago

Moscow, Russia

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linear-algebra

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Questions

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112

Why do we define quotient groups for normal subgroups only?

Dec 14, 2010

43

How do I find partners for study?

Jan 15, 2012

36

Is there a continuous bijection from $\mathbb{R}$ to $\mathbb{R}^2$

Jun 25, 2011

30

A ring element with a left inverse but no right inverse?

Oct 8, 2011

21

Is there a way to make tangent bundle a monad?

Nov 20, 2011

Answers

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21

Exterior Derivative vs. Covariant Derivative vs. Lie Derivative

Oct 9, 2012

20

How can I prove that $xy\leq x^2+y^2$?

Apr 15, 2013

17

What is the meaning of the third derivative of a function at a point

Dec 19, 2010

16

Division by zero

Nov 17, 2012

14

Intuitive explanation of why $\dim\operatorname{Im} T + \dim\operatorname{Ker} T = \dim V$

Oct 6, 2012

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linear-algebra

34

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reference-request

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geometry

27

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5

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general-topology

25

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18

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calculus

25

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6

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+20

Is there a way to make tangent bundle a monad?

+10

What does "working mathematician" mean?

+10

Is there a continuous bijection from $\mathbb{R}$ to $\mathbb{R}^2$

+10

Why do we define quotient groups for normal subgroups only?

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