Tagged Questions
0
votes
0answers
77 views
Solve equations real and imaginary part separately
For my system of equations, the procedure described in Solving complex equations of using Reduce works no more. How can I separate the real and imaginary part of ...
0
votes
0answers
73 views
Defining and Solving Systems of Equations Using Matrix Tables
I've defined a system of equations, but I been unable to get Mathematica to solve for the individual variables created by matrix tables.
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4
votes
2answers
508 views
Solving a time-dependent Schroedinger equation
I want to solve the time-dependent Schroedinger equation:
$$
i\partial_t \psi(t) = H(t)\psi(t)
$$
for matrix, time-dependent $H(t)$ and vector $\psi$.
What is an efficient way of doing this so ...
2
votes
1answer
141 views
Solving an equation involving a determinant
I have a matrix which doesn't include numerical values. There are four variables in it. It is defined by
...
4
votes
2answers
208 views
All possible solutions to the Matrix Equation (free variables appearing)
I am attempting to solve a system of linear equations using LinearSolve[] . In my case, the number of unknowns are more than constraints. I learnt that LinearSolve ...
0
votes
0answers
61 views
please help to me, Where is my mistake? [closed]
e = {{v, -37925.9}, {-37925.9, s}}
v = (37925.9 - 12.74 x)
s = (7585108 - 15029 x)
Solve [e == 0 , x ] please help to me, Where is my mistake?
2
votes
1answer
121 views
How to modify a matrix to satisfy a special condition?
I have matrix like this:
How do I modify this matrix to make it satisfy the following condition:
For each element {i, j} in the matrix the sum of the elements of row i must be equal to the sum ...
4
votes
1answer
61 views
Trouble using FindInstance with MatrixRank
I'm really confused about what's going wrong with my call to FindInstance:
...
14
votes
2answers
473 views
Using the Krylov method for Solve: Speeding up a SparseArray calculation
I'm trying to implement this Total Variation Regularized Numerical Differentiation (TVDiff) code in MMA (which I found through this SO answer): essentially I want to differentiate noisy data. The full ...
6
votes
0answers
219 views
MMA implementation of Earth Movers Distance?
Has anyone implemented in MMA the Earth Mover's Distance (EMD)? A concept dating back to Monge 1871, used to compare histograms and images, e.g., the CIEDE2000 Color Difference algorithm. Yossi ...
