# Questions tagged [infinite-loop]

Questions about looping or recursive structures that do not complete. Such structures include While, For, FixedPoint, and NestWhile. Also user defined functions that make recursive calls to themselves.

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### turn infinite loop into finite loop

I am trying to make a table where I can save the stock value with the iterative part, where I should have 100 sequence with 843 entry in each sequence. The loop doesn't run correctly in the sense ...
60 views

### Problem with iterations of Prepend/While

I am doing some work with black-scholes and am trying to find random interest rates based on some given information. This is my original code: ...
49 views

### Why does my code not work? [closed]

Why does the following code not work? ...
54 views

### For-loop not indexing correctly [closed]

I have a question. Why does my result start with J = 2? I write another loop but it start 1 i confused-i need help ...
35 views

### Mathematica Function Taxicab Numbers [duplicate]

I have spent days trying to compile this code and I cannot generate a list of taxicab numbers for the Hardy-Ramanujan Theory. Here is the module I wrote earlier: ...
47 views

### How do I modify my code to detect cycles in this Collatz-like recursion?

A popular variant of the Collatz recursion is the following. Given a positive integer $n_i$, If $n_i$ is even, $n_{i+1}=n/2$, If $n_i$ is odd, $n_{n+1}=3n-1$. The Mathematica code I'm using to ...
49 views

### Run a loop without merging the cells

I have to run a loop of a certain variable than spans through the entire notebook. However the notebook has already been divided into different sections; merging these sections will be a pain and ...
72 views

### For loop for two variable at the same time

Can I use for loop for two variables as example show below at the same time? for (int x = 0, y = 0; x < 10 && y < 10; x++, y++)
52 views

### Return last value of While function

I want to make a function that performs a multiplication with Inner i number of times using a ...
80 views

### An optimization problem over two variables

I have the function fun[x_,y_, t_] = Cos[x] + Exp[I y] Sin[x] Sin[t]; such that $0\le {\rm x}\le \pi$, $0\le {\rm y}\le 2\pi$, and $0\le {\rm t} \le 10$. I compute ...
63 views

### Looping a function that requires previous calculations in order to continue

I am trying to solve a system of overdetermined linear equations for 2 unknowns with 3 variables. For a given equation of a line, we can write it as: ax + by = c, which expressed in vector form is ...
56 views

### How to make a table for loops?

I have a code given by ...
127 views

### Avoiding a for loop to create a list

I am trying to evaluate: ...
61 views

### Generating trigonometric sums

How can one generate all cosine polynomials with $\pm1$ coefficient of following form: $$\sum_{k=1}^n\pm\cos kt.$$ I tried DO loop but couldn't get all of them as clearly cannot exhaust $2^n$ ...
335 views

### Sum of Random Integers

I am trying to get a list of numbers with at least 1000 sums as possible, using random numbers from 1 to 10. But I don't want to get blank list output. How can I only get a list of numbers greater ...
129 views

### Combined ParametricNDSolveValue with Do loop?

two weeks ago, I post a question see, and I got its answer, however, I would like to vary the values: g from (0.02 to 0.07), R from (0.1 to 0.3),and k2 from (0.03 to 0.07) by an increment of 0.01 ...
161 views

### Infinite While loop

I have an exercise where I need to input a multi-digit number and evaluate the square of the sum of its digits. I am new to Mathematica and I can't figure out why I'm getting an infinite loop. This is ...
92 views

### Dynamic loop unexpectedly stops in CDF Player Pro V11.3

Correction The issue described below it is not caused by CDF Player Pro after all. Apologies for the confusion. The Dynamic loop just unexpectedly stops anyways (it just takes longer when run in ...
86 views

### Build a list from a Loop!

I need to build a list with the values of the parameter $\gamma = \mu/a$ and the standard deviation of the following process, ...
334 views

### How to populate a table with results from a while function

Does anybody know how to save the intermediate results inside a while function in a table? Here is my code. I would like to save the x,y,counter values in a table in every step that while takes. Thank ...
45 views

### NestWhile and infinite loop

Obviously, the following code leads to an infinite loop: ...
208 views

### Why is this an infinite loop? [closed]

The following minimal non working example is an infinite loop: why is it so? list={1}; n=2; While[Last@list<10,Append[list,n];n++] It seems that ...
46 views

### Looping and find the minimum of a function and get data in excel sheet

I have written a code. I want to change y from (*10^-4 to 10^-6) and want to find the corresponding minimum and then need to export the value of y and corresponding minimum in an excel sheet. I know ...
22 views

### Use of timing system to change input variable in a function

Assume you have some function which is defined by a while loop: sampleFunc[start_] := Module[{i}, While[i = 1; start < 10, i++];] And let's assume I do: ...
287 views

### Using a loop to make a vector of functions

I am trying to use a do loop to make a vector of an arbitrary number of functions that can be evaluated later. I think the problem I am having is because of the AppendTo function in my code, because ...
70 views

### Setting some Rows and Entries in a Matrix to 0

How can I set certain entries in a matrix to be 0? Given an $m\times n$ matrix with specified values: mat = Table[1/i, {i, n}, {j, m}] I want to make some ...
111 views

### For loop Delay Differential Equation [closed]

I need to Solve a delay differential equation with one free parameter, then plot the values of the solution. I am not able to write the code for this. ...
69 views

### How to run this statement multiple times and put them in a matrix?

I have the following Mathematica Code. ...
37 views

### Loops and guesses

I have to solve a system of equations in the following way: I first guess a value for a variable, let's call it y, calculate another variable ...
108 views

### How to do calculations in a loop from list of data?

I wrote the code below to do the calculation for each variables. I would like to know how to do this in one loop and to print out timing each time a cycle of calculations is completed. Another ...
869 views

### A while loop that terminates after a number of seconds elapsed?

I would like to write something along the lines of: While[(t=Timer[])<60 (*in seconds*), ...do stuff... ] Unfortunately, I'm not aware of a timer object in ...
189 views

### Abort when key is pressed

Is it possible to abort a while loop when a key is pressed? Lets say I have this code t=0; While[t<10!,Print[t];t++] Is there a way to stop this loop when I press space? Is there a command like "...
203 views

### For-loop doesn't work [closed]

I need some help. I try to run the code below, but at the end I1 = 0, I2 = 0 (the same as their initial values). I'm not sure which part of my code is wrong. ...
169 views

### avoiding writing loops

I have a list a={1,2,3,4,5} I want to calculate absolute differences of each element with all other elements ...
144 views

### Recursion depth exceeded in pattern matching with attribute Flat

I am defining a linear associative multiplication operation Mult[]: ...
118 views

### Taking derivative using some variable

I have a function with four variable, let's suppose it as f(t,x,y,z). I want to define a For loop in which in each iteration, differentiation operator acts on the f(t,x,y,z) with respect each ...
143 views

### loops in one loop, [closed]

I'm new Mathematica user. I try for loop but it didnt work. I used ...
110 views

### Having trouble looping through arrays

Apologies if this question is written in the incorrect format this is my first time posting here. I am trying to generate a list of vectors whose x, y and z components can be made by selecting an ...
103 views

### Repeating Calculations/Iterations without a specific function

I am trying to repeat an initial condition many times such that I get a desired final output. ONE final output depends on many subsequent calculations from ONE initial condition. But I want to get a ...
229 views

### Help With Do While Loops

I understand this question has been asked before but for some reason I can't get it to work also I'm new to stackexchage so I apologize if everything I write is not up to standards. That being ...
40 views

### Do loop carrying out recursion not looping - must be a simple mistake!

I have what I think is a basic do loop, but it is not executing as planned. Starting with some setup: ...
201 views

### Do Loop with Solve not working

I am trying to solve bellowing loop but I faced with following error! ...
106 views

### Comparing two matrices in an If block

I want to find out for what value of n MatrixPower[u, n] == IdentityMatrix ...
75 views

### Avoiding loops with breakpoints of a Piecewise function

I'm new to mathematica and I'm trying to avoid loops. The setting is the following: I have consumers with preferences (their Betas). Depending on the Beta consumers will have different preferences. ...
73 views

### Why is this while loop not giving me any output? [closed]

I have following code in my Mathematica: ...
53 views

### Repeatedly applying a function

I have writing a code in order to get pixel values of a image along a line. I want to repeatedly to apply the function to the image to get pixel values along multiple lines. My question is how can ...
75 views

### why the result not contain imaginary, I? [closed]

Good day, First of all, sorry if my coding in this forum has mistake. I already learned it and this is the best try from me. May anyone help me troubleshoot my problem below. ...
69 views

### I want to run 5 different simulation cases over an entire Mathematica Workbook?

I want to loop over the case numbers, so run cases 1 -5 without manually changing. caseNumber = 1; Which[caseNumber == 1, dataString = "Jan", caseNumber == 2, dataString = "Feb", caseNumber == 3, ...