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Questions tagged [iteration]

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0 votes
1 answer
105 views

How to obtain a solution to a system of equations using the method of successive approximations? [closed]

My question is not offtopic at all! It's about problem of syntax in Mathematica. It is necessary to obtain an analytical solution to a system of equations using the method of successive approximations ...
user2272592's user avatar
2 votes
2 answers
46 views

How to fix parameter locally for iterating recursion equations

The following is a simplified version of a more detailed problem. I have two coupled recursion equations of two variables, x and y. One equation also depends on a parameter, c: ...
andring's user avatar
  • 393
4 votes
2 answers
130 views

How to use functional iteration with changing function?

I recently came across this problem on reddit. The problem is supposed to be read like a snake, and the result of each succesive operation is sent to the next operation: There are 9 blank boxes and ...
ydd's user avatar
  • 4,572
1 vote
1 answer
97 views

Use Mathematica to Implement Blahut–Arimoto Algorithm (Part: Algorithm for Rate-Distortion)

Try to use Mathematica to implement Blahut–Arimoto algorithm (here we just focus on the part of computation of Rate-Distortion). Here are some reference code snippets: Python The algorithm looks ...
138 Aspen's user avatar
  • 1,593
1 vote
1 answer
105 views

Use Mathematica to Implement Blahut–Arimoto Algorithm (Part: Algorithm for Channel Capacity)

Try to use Mathematica to implement Blahut–Arimoto algorithm (here we just focus on the part of computation of channel capacity) Here are some reference code snippets: MATLAB(a) MATLAB(b) Python The ...
138 Aspen's user avatar
  • 1,593
0 votes
0 answers
45 views

Ising Model Simulation Increase Efficiency

I implemented a 2d simulation of Ising Model for zero external magnetic field. Below you can find the function I wrote to calculate the energy (periodic conditions) ...
Gianmarco Morbelli's user avatar
2 votes
1 answer
150 views

How to Optimize Integro-Differential Equation Solving Time in Mathematica?

I'm trying to solve an integro-differential equation numerically in Mathematica that models the evolution of a physical system . However, the computation takes a very long time and doesn't yield a ...
Roy Smith's user avatar
4 votes
2 answers
237 views

Given two functions, generate all nested applications of the functions to a given order

I have two functions $f$ and $g$. Given some order parameter $n$, I want to created all nested applications of $f$ and $g$ and save them in a list. For example, for order 1 we will have ...
JohnnyB's user avatar
  • 115
13 votes
4 answers
396 views

Reproduce the annulus fractal

I've made some attempts, but I don't know how to set the color and thickness of the circle. ...
vector's user avatar
  • 243
2 votes
1 answer
78 views

Problem designing test for NestWhile?

I am trying to use NestWhile with a custom test as follows: ...
Red Banana's user avatar
  • 5,411
3 votes
3 answers
215 views

How to reuse an iterator in different functions?

How can I reuse iterators? For example, instead of Table[i, {i,0,10}] Table[i^2, {i,0,10}] Table[f[i], {i,0,10}] write something like ...
homocomputeris's user avatar
0 votes
1 answer
95 views

Speed up multiple Do loop

I am writing a script to simulate the multi spin system and for that I need to use three successive iterations. The code runs fine but takes a long time. I need the final FID. So, has there a way to ...
P Pyne's user avatar
  • 473
0 votes
0 answers
32 views

How to find clear solution for iterative problem by condition $<v_k ,v_n>=0$ If $k!=n$

I want to find x[n] by v[n] values without x[n] in solution by iterative below problem: <...
user68119's user avatar
1 vote
2 answers
80 views

Can't use iterative variable as part specification [closed]

I've got the following mathematica code: ...
Sebastian 's user avatar
0 votes
0 answers
47 views

FindMinimum with many Sums and NIntegrates is very slow

I want to calculate the global minimum of an equation which has several hundred Sums (I used 300 in this code), but the calculation is very slow. My code is as ...
user43830's user avatar
  • 101

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