# Tagged Questions

The tag has no usage guidance.

28 views

### Tensor Eigenstates

I have the following equation: $$f_i^´(t+1)=\sum_{jk}R_{i|jk}\tilde{f_j}(t)\tilde{f_k}(t)$$ It is about evolution of a population. I use this equation in my python program in the following way: <...
46 views

### How to check if two sets of vectors span the same space in matlab/python?

In MATLAB/Python, is there a way to compare the subspaces span by two different sets of vectors and check if they are the same?
45 views

### Legendre Polynomial coefficients

Can you please write out explicitly the formula for the coefficients? From Wikipedia, \begin{aligned} P_{n}(x)&={\frac {1}{2^{n}}}\sum _{k=0}^{n}{n \choose k}^{2}(x-1)^{n-k}(x+1)^{k}\\&=\sum ...
56 views

### Finite field and its element with symbols [Sage / Python / …]

I have a finite field $T=GF(2^3)$, normal basis $(a, a^2, a^4)$ and polynomial $f$ from field $T$, which contains unknown variables / symbols. Is it possible to get vector with coordinates of f in ...
24 views

### Finding equilibrium points of a system of nonlinear differential equations

I am currently working on a spatially explicit ODE model with dispersion to study the population dynamics of mosquitoes. I wish to compute the equilibrium values of the populations as functions of the ...
29 views