Top new questions this week:
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I have a bit lengthier ODE function which was simulated by using Scipy solve_ivp function. During this simulation I calculated many parameters but as the output, I am taking out put only some other …
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How to efficiently convolve the function $h(t)=H(t)e^{-t}$ with a function $x(t)$ sampled non-uniformly, i.e. $\{x(t_0), x(t_1), …, x(t_{N-1})\}$? $H(t)$ is the Heaviside step function, and the …
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I am struggling with this assignment. I have to write an upwind scheme for the following PDE: $$u_t+a Du=0 \quad\mathrm{on}\;(-1,3)$$ $a$ is said to be positive, the initial condition is $\sin(2\pi x)$…
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I’ve got some code that I need to squeeze every bit of both time and space out of. I’m looking for a better solution to the following problem. For reasons outside of the scope of this question, I …
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In the paper [1], author has discussed a distinction between the 3 types of computations: numeric, combinatorial, and geometric. The author says that Geometric computation is one that has elements of …
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Recursive least squares can be implemented using the Sherman–Morrison formula to avoid resolving, however, have better methods without $n^2$ cost been developed? I’m interested if there is a good …
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Greatest hits from previous weeks:
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How to find all roots of an equation in Matlab? I tried and it gave me just one of the roots. For example: my equation is $F(x)=0$ where …
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Let us consider a smooth initial condition and the heat equation in one dimension : $$ \partial_t u = \partial_{xx} u$$ in the open interval $]0,1[$, and let us assume that we want to solve it …
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I was just curious as to why high-order (i.e. greater than 4) Runge–Kutta methods are almost never discussed/employed (at least to my knowledge). I understand it requires greater computational time …
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I would like to determine the theoretical number of FLOPs (Floating Point Operations) that my computer can do. Can someone please help me with this. (I would like to compare my computer to some …
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I’m looking into moving some computations of mine to a data center to get more computation power. In the context of this process, I am getting confused by the differentiation of a computation node and …
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I am trying to calculate the energy, magnetization and specific heat of a two dimensional lattice using the metropolis monte carlo algorithm. …
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Going to teach students of undergraduate level a course titled Introduction to Computer Programming. I am confused a bit. In Computational Physics scientists use C/C++ or Python or Fortran,CUDA etc…….
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