python (12.9k questions)
javascript (9.2k questions)
reactjs (4.7k questions)
java (4.2k questions)
java (4.2k questions)
c# (3.5k questions)
c# (3.5k questions)
html (3.3k questions)
autocorrelation function calculated with numpy is not positive definite?
I am calculating an autocorrelation function of a signal using Numpy's FFT by first calculating the power spectrum. I believe that autocorrelation functions are positive definite. However, when I test...
tomerg
Votes: 0
Answers: 1
Average Directional Unit Vectors - Determinism Test
Say I take this box as an example:
I want to calculate the average directional vectors in the embedding phase space. The average direction vector V_k is calculated at each pass p of the trajectory th...
DomIsAwesomee
Votes: 0
Answers: 0
Solving a coupled 2nd order DE with linear algebra
I am trying to numerically solve a coupled second order differential equation that describes the rate of a reversible equation between two substances A and B.
where k- and k+ are the rates of conv...
StrugglingPhysicist
Votes: 0
Answers: 0
Matrix optimisation solver with constraints (linear algebra) python
could you please help with idea of realisation of solver from Excel (with function, restraints and variables). I have read answer to question 58002755, as well as the very question, but haven't caught...

Elina
Votes: 0
Answers: 0