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seen Nov 26 at 20:18

Nov
18
comment Can I generate matrices with a constraint?
@bills Sorry for my ambiguous language. I meant that $k$ is something chosen externally. And then the matrices have to be generated. Can you help?
Nov
18
comment Can I generate matrices with a constraint?
Where is this value of $k$ that I would like to fix arbitrarily? I would think that any correct code should let me first choose a value of $k$ and then the matrices would be generated corresponding to that.
Nov
17
revised Can I generate matrices with a constraint?
added 13 characters in body
Nov
17
asked Can I generate matrices with a constraint?
Oct
24
awarded  Nice Question
Sep
20
accepted Graph expansion on Mathematica
Sep
20
comment Graph expansion on Mathematica
May be you can add some explanations to your code?
Sep
20
comment Graph expansion on Mathematica
I am unable to understand your code. I simply don't know enough Mathematica to parse your code. How do I even give the graph as an input to your code? What is "Plus @@", "Rest", "Module" , "IntegerDigits", "Position", "[Infinity]", "Complement", "Range" - none of these make any sense to me! Can you kindly write something for beginners?
Sep
18
comment Graph expansion on Mathematica
Given my purposes I am not sure that it will be useful for me to get approximations. I think I need exact values.
Sep
18
comment Graph expansion on Mathematica
Can you just tell me how to run though all possible subsets of vertices of some input graph and calculate the RHS of h(G) for each of them?
Sep
18
comment Graph expansion on Mathematica
Does this give the exact value of $h(G)$ or an approximation?
Sep
18
revised Graph expansion on Mathematica
added 582 characters in body
Sep
18
comment Graph expansion on Mathematica
@belisarius I have added references in the question.
Sep
18
asked Graph expansion on Mathematica
Sep
17
awarded  Popular Question
Aug
25
awarded  Popular Question
Jun
27
accepted Why doesn't Roots work on a certain quartic polynomial equation?
Jun
26
comment Why doesn't Roots work on a certain quartic polynomial equation?
Thanks for your efforts. (1) When I set the values to those special points and evaluated "roots" on it the system hung up. Did it happen for you too? (2) And aren't you also seeing that those last 2 of your roots are not a solution of the equation?
Jun
26
asked Why doesn't Roots work on a certain quartic polynomial equation?
Jun
24
comment How to power-series expand determinants?
@Nasser I want a general expression for the coefficients of $x$ in $\sqrt{det (g)}$ in terms of the matrices $g_i$ and $h_d$. I want to do this for arbitrary matrices $g_i$ and $h_d$