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reviewed Approve Find the volume common to two circular cylinders, each with radius r, if the axes of the cylinders intersect at right angles. (using disk/washer)
Jun
10
reviewed Approve When would a function be differentiable at the end point?
May
27
revised Size of the connected components
deleted inappropriate tag
May
23
answered The generating set of Cayley graphs over $Z_n$
May
12
comment Returning Paths on Cubic Graphs Without Backtracking
@draks: no problem
May
6
answered Eigen value of principal submatrix.
May
1
answered Eigen value and Regular Graph (not Strongly Regular graph).
Apr
27
comment Is there any relation between these matrices?
@sSry: well, for a start your question and ny answer refer to undirected graphs.
Apr
14
comment Can someone advice edge contraction tool?
Use a blackboard?
Apr
13
comment Extra Operation required for Smith Normal Form over PID-Theoretical Justification
You might get a better answer sooner if you say what your operations are.
Apr
13
comment Is there any relation between these matrices?
@Sry: edited my answer.
Apr
13
revised Is there any relation between these matrices?
closed bracket
Apr
11
answered Is there any relation between these matrices?
Apr
10
revised About Cayley graphs on finite fields.
corrected spelling
Apr
9
comment About Cayley graphs on finite fields.
@user6818: It's not at all clear what you mean by the spectrum of a matrix over a finite field.
Apr
9
comment About Cayley graphs on finite fields.
@user6818: You can say something about the spectrum - you are dealing with a known graph and you can write down the eigenvalues explicitly. If your connection set is closed under multiplication by $-1$ and spans $V$, you will get a connected Cayley graph. Note that Cayley graphs for abelian groups cannot have a large spectral gap though.
Apr
9
comment About Cayley graphs on finite fields.
@user6818: Well you could symmetrize the connection set, but I had to deal with what you wrote the first time. If you do symmetrize, you get a Cartesian power of cycles $C_p$, and the spectrum is still independent of the choice of basis.
Apr
9
answered About Cayley graphs on finite fields.
Apr
8
answered Clear up definition of cayley graph
Apr
7
comment How to prove this statement with A,B matrices?
Start by adding $I$ to both sides of your equation.