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Alexei Averchenko

Moscow, Russia

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Top Questions
110 votes

Why do we define quotient groups for normal subgroups only?

group-theory normal-subgroups quotient-group asked Dec 14, 2010 at 11:54
math.stackexchange.com

107 votes

How do I boot into single-user mode from GRUB?

boot grub2 asked May 7, 2012 at 3:50
askubuntu.com

43 votes

How do I find partners for study?

soft-question big-list learning online-resources asked Jan 15, 2012 at 6:32
math.stackexchange.com

35 votes

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

homework general-topology asked Jun 25, 2011 at 6:54
math.stackexchange.com

30 votes

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

abstract-algebra ring-theory asked Oct 8, 2011 at 3:25
math.stackexchange.com

30 votes

Evaluating characters by means of description

analysis star-wars asked Nov 30, 2011 at 19:41
movies.stackexchange.com

27 votes

How to prevent a specific program from swapping?

linux asked Feb 9, 2011 at 1:44
superuser.com

25 votes

Regular languages from category-theoretical point of view

fl.formal-languages regular-language ct.category-theory asked May 8, 2012 at 6:42
cstheory.stackexchange.com

19 votes

Do strong and weak interactions have classical force fields as their limits?

quantum-field-theory forces standard-model quantum-chromodynamics classical-physics asked Oct 6, 2012 at 18:38
physics.stackexchange.com

19 votes

Is there a way to make tangent bundle a monad?

differential-geometry category-theory monads asked Nov 20, 2011 at 11:41
math.stackexchange.com

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Top Answers
25
What is data oriented design?
stackoverflow.com

21
Exterior Derivative vs. Covariant Derivative vs. Lie Derivative
math.stackexchange.com

20
How can I prove that $xy\leq x^2+y^2$?
math.stackexchange.com

17
What is the meaning of the third derivative of a function at a point
math.stackexchange.com

16
Division by zero
math.stackexchange.com

14
Intuitive explanation of why $\dim\operatorname{Im} T + \dim\operatorname{Ker} T = \dim V$
math.stackexchange.com

12
Rigour in mathematics
math.stackexchange.com

10
Postgres consistently favoring nested loop join over merge join
stackoverflow.com

9
Defining a manifold without reference to the reals
math.stackexchange.com

8
Can everything be done in Telnet?
superuser.com

8
Address of std::vector itself stable?
stackoverflow.com

8
Functions which are Continuous, but not Bicontinuous
math.stackexchange.com

8
Isomorphism of rings implies isomorphism of vector spaces?
math.stackexchange.com

8
C++: std::vector.push_back() и классы
ru.stackoverflow.com

7
Can one TeX file output to multiple PDF files?
tex.stackexchange.com

7
Geometric interpretation of the Kronecker product?
math.stackexchange.com

7
Why do we teach calculus students the derivative as a limit?
mathoverflow.net

7
Автогенерируемые конструкторы и операторы присваивания rvalue
ru.stackoverflow.com

7
Выход из цикла while
ru.stackoverflow.com

6
Image of commutative diagram is commutative under functor?
math.stackexchange.com

6
Как организовать чтение из файла С++
ru.stackoverflow.com

5
Using Pairs or 2-tuples in Java
stackoverflow.com

5
Principal and fiber bundles as defined by Husemoller
math.stackexchange.com

5
Регулярное выражение с набором разрешенных значений
ru.stackoverflow.com