User Dilawar

385 votes

37 answers

131k views

If $AB = I$ then $BA = I$

asked Sep 2, 2010 at 7:04

33 votes

1 answer

2k views

Universal binary operation and finite fields (ring)

asked Mar 4, 2011 at 4:41

24 votes

6 answers

66k views

Negation of if and only if?

asked Nov 15, 2010 at 18:57

23 votes

3 answers

15k views

'Free Vector Space' and 'Vector Space'

asked Jan 20, 2011 at 14:48

18 votes

3 answers

30k views

Norm of a symmetric matrix?

asked Nov 7, 2010 at 18:28

11 votes

5 answers

2k views

Dependence of Axioms of Equivalence Relation? [duplicate]

asked May 15, 2011 at 16:25

9 votes

1 answer

3k views

Largest eigenvalue of a positive semi-definite matrix is less than or equal to sum of eigenvalues of its diagonal blocks

asked May 14, 2012 at 7:30

9 votes

2 answers

2k views

Div, curl and linear algebra

asked Feb 28, 2011 at 2:13

5 votes

1 answer

475 views

Why does $L \cap (M + N) = (L \cap M) + (L \cap N) $ not hold for subspaces

asked Mar 21, 2011 at 3:57

5 votes

3 answers

10k views

Definition of “maximal” and “minimal” [duplicate]

asked Jan 3, 2012 at 8:25

4 votes

2 answers

8k views

If cancellation laws hold, then a finite semi-group is a group [duplicate]

asked May 8, 2012 at 10:02

3 votes

1 answer

3k views

Chemical kinetics using Laplace transformation

asked Apr 23, 2015 at 19:22

3 votes

1 answer

98 views

Different formulations of chemical kinetics giving different solution trajectories

asked Sep 8, 2015 at 4:23

2 votes

2 answers

109 views

Partitioning of geometric net into equivalence classes

asked Jan 8, 2012 at 10:08

2 votes

3 answers

4k views

Does a non-zero linear functional attain every value?

asked Mar 20, 2012 at 11:58

2 votes

1 answer

558 views

Is it a category?

asked Jul 3, 2011 at 4:55

2 votes

3 answers

3k views

Yet another confusion about Strong vs Weak Mathematical Induction - Wrong Proof?

asked Aug 5, 2011 at 13:26

1 vote

1 answer

73 views

Show that $\cap$ may not distribute over $+$

asked Nov 11, 2012 at 10:12

1 vote

2 answers

882 views

Transform a symmetric matrix into a symmetric matrix of different size

asked Jan 15, 2011 at 10:54

1 vote

1 answer

80 views

If $A_1 x = b_1$ and $A_2 x = b_2$ with $b_1 = b_2 $ have the same solution, how $A_1$ and $A_2$ are related?

asked Aug 10, 2016 at 4:32

1 vote

4 answers

2k views

Determinant of a matrix $A$ is zero when its has a zero submatrix of dimentions $p \times q$ and ...

asked May 9, 2012 at 13:48

1 vote

1 answer

42 views

Bound on variance of random process when signal is known

asked Aug 28, 2014 at 5:03

0 votes

3 answers

3k views

Probablity of finding A or B or both A and B

asked Jul 14, 2013 at 2:28

0 votes

1 answer

52 views

How many events if the probability of an event is given

asked Oct 3, 2013 at 11:40

Stack Exchange Network

24 Questions

If $AB = I$ then $BA = I$

Universal binary operation and finite fields (ring)

Negation of if and only if?

'Free Vector Space' and 'Vector Space'

Norm of a symmetric matrix?

Dependence of Axioms of Equivalence Relation? [duplicate]

Largest eigenvalue of a positive semi-definite matrix is less than or equal to sum of eigenvalues of its diagonal blocks

Div, curl and linear algebra

Why does $L \cap (M + N) = (L \cap M) + (L \cap N) $ not hold for subspaces

Definition of “maximal” and “minimal” [duplicate]

If cancellation laws hold, then a finite semi-group is a group [duplicate]

Chemical kinetics using Laplace transformation

Different formulations of chemical kinetics giving different solution trajectories

Partitioning of geometric net into equivalence classes

Does a non-zero linear functional attain every value?

Is it a category?

Yet another confusion about Strong vs Weak Mathematical Induction - Wrong Proof?

Show that $\cap$ may not distribute over $+$

Transform a symmetric matrix into a symmetric matrix of different size

If $A_1 x = b_1$ and $A_2 x = b_2$ with $b_1 = b_2 $ have the same solution, how $A_1$ and $A_2$ are related?

Determinant of a matrix $A$ is zero when its has a zero submatrix of dimentions $p \times q$ and ...

Bound on variance of random process when signal is known

Probablity of finding A or B or both A and B

How many events if the probability of an event is given