All Questions

I've been trying to build a convolutional autoencoder with Mathematica 12.3. For this, I need to reverse the action of PoolingLayer[]. Is there any layer similar to ...

This answer: https://mathematica.stackexchange.com/a/201726/62529 allows downloads of all files from wolfram cloud. However, it does not preserve the folder tree. I have a lot of files I want to ...

I have two open Mathematica notebook files, call them file A and file B, that are identical except for some initial parameter conditions that I manually input at the beginning of each file (all the ...

I'm trying to plot a 2 variable function but whenever I try to put it all in the same plot it shows different. Any sugestions on what could be making this happen?? The function is defined like this Jt[...

I have 3 directed branches and I want to create all possible graphs that can be created from these branches with the condition that each branch is used once. Q1: How can I do create and graph them? ...

Is there a way to obtain solution $x=0$ for the equation $\frac{1}{x}=\infty$ in Mathematica? I tried Solve, Reduce, ...

I have a system of non-linear differential equations: $\dot{x} = f(x,y,z),$ $\dot{y} = g(x,y,z)$ and $\dot{z} = h(x,y,z)$ with $0 \leq x,y,z \leq 1.$ The restpoints of the system are $(1,0,0),$ $(0,1,...

Suppose I have two matrixes M1 = {{0, 0}, {0, 0}} M2 = {{0, 0}, {0, 0}} Now I wanna have $N$ matrixes in this form called M1, M2, M3, M4,...MN How to code to ...

This seems like a very inefficient way of doing what I want. I generate all permutations of (for example) {1, 1, 2, 2}, then for each permutation I generate its ...

This the code of Hofstadter spectrum for square lattice using Mathematica ...

I'm trying to compute an integral of f(x,y) such that an integration over "y" is performed inside the integral over "x". My trial is below: <...

I want to plot the solution obtained from NDSolve as a multicurve plot like shown in the following sample image (image ref). Here, x1, x2 , x3, x4 .. are the solution computed at ...

There are 3 kinds of line breaks \r \n \r\n For windows, \r\n is standard. Suppose that there is a file called document.txt, using \r or \r\n as line breaks. Suppose that I open document.txt with a ...

I am working on computing the following integration: aa = N[2, 20] H = 4/160; X = Range[-aa, aa, H]; Integrate[400/(1 + 40*x^2), {x, X[[k]], X[[k + 1]] and ...

I would like to solve: $e^{-b (1.365)} + e^{-b(-0.350)} + e^{-b(-0.378)} = 0$, where $b$ is complex. So, I have written: ...

I am interested in modifying the code underlying the reinforcement learning example SimulatedCartpole in Mathematica 12. This example is still listed as Experimental. The help function indicates that ...

For a given notebook, I can turn on CellIDs by opening the notebook's stylesheet and adding the following code: ...

I am trying to figure out if this is a bug or if I do not understand something about FunctionLayer. For reference this is: Mathematica v12.3.0.0 Define the matrices:...

Please I need your help!! I'm a beginner with the Mathematica program, I need to code the following system: $$ \left\{\begin{array}{ll} \partial_{t} \psi(x,t)-\Delta \psi(x,t)=0, & (x,t)\...

I can not solve the system.Can any one help me with that? Thanks. ...

Why is $\log a = \log b \Rightarrow a=b$ true?

I would like to plot the solution obtained from solving a PDE using NDSolve at the x-coordinates specified in includePoints = {{10}, {20}, {30}, {40}, {50}}; as a ...

I can get the answer by using Solve from the prior equations like : ...

I have the following code for visualizing bending of superellipsoids. Most of the functions are essentialy wrappers so that the ParametricPlot3d code does not ...

I have a function g of the form g[y_]:=A.y.B where y is a 2-by-2 matrix whose elements are ...

I am trying to solve the following: ...

I'm trying to solve a PDE using NDSolve. cfun = NDSolveValue[pde, c, {t, 0, tEnd}, DirichletCondition[c[t, x] == 5, x == 0], {x} \[Element] mesh]; I get the ...

Suppose I know that the time derivative of $x(t)$ is $\dot{x}(t)=-x(t)$. I consider the function $V(x)=x^2$ and I want to compute the time derivative of $V$ along the trajectories of $x$, namely $\dot{...

I would like to know what would be the most efficient way to shift numerical 2D arrays along its dimensions as follows: (A = Partition[Range[9], 3])//TableForm $$\...

The input Plot[1-(1-x)^Floor[2/x],{x,0,1/20}] yields where the white space we see below the curve near $x=0.01$ is an artifact. How can we fix this simply? ...

I think someone has asked this in the past (maybe me), but I don't remember an answer or workaround. When selecting Stack Windows from the menu bar e.g. does any ...

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As the title suggests I'm trying to make a 2D (x-y) scatter plot of the list {x,y,z}, colored by the value of a third parameter (z). I came the closest by using ...

I derived equation of sum from the following problem, $\int_{a}^{b}\sum_{n=0}^{\infty} cos^n(x)dx$. Using the following definitions, $cos(x)=\frac{e^{ix}+e^{-ix}}{2}$ and $(a+b)^n=\sum_{m=0}^{n}\binom ...

Given A={{0,1,1,0},{1,0,0,-1},{-1,0,0,1},{0,1,1,0}} and B={{0,1,0,0},{0,0,0,0},{0,0,0,1},{0,0,0,0}} and ...

How to calculate Numerical gradient of 2D arrays using the "gradient function" ("Matlab-like")? "[___] = gradient(F,hx,hy,...,hN) specifies N spacing parameters for the ...

I have a compiled function f to be used as a piece of a much larger calculation. I would like to expand out a function that calls ...

How to center the location of the z-axis label which is |f(x,t)|? ...

I'm currently using this version of GroupBy: GroupBy[{elem1,elem2,…},spec,red] applies the function red to reduce lists of values that are generated. I want to rewrite my function with this one: ...

I have a function $y(x)$ which is the solution of the initial value problem - $y = \frac{1-y}{A} - \frac{y.|r(x)+m(x)|^2}{B}$ with an initial condition $y_0=1$. I solved for $y(x)$ using the following ...

I have a simple matrix expression. ...

I would like to know why when I change +1 in a discrete Sine change the list line plot and when I plot the function sine anything change. ...

I have a problem with the dimensions of the output of a ParametricPlot. What I'm trying to do is solve a differential equation using ...

Suppose I have a notebook with lots of "DisplayFormulaNumbered" cells. These cells have a built-in counter, which continuously updates when cells are deleted, moved or added, which is nice. ...

It includes adjusting the DPI of the image.

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I have a code. After Quit, I want to re-evaluate the notebook. It takes about 10 seconds to start the re-evaluation in Windows 10. But my friend uses Macbook. It ...

Suppose you want to perform an inner approximation of a planar semialgebraic set by a finite set of polygons. The following is a quick way to yield an approximation but I am not convinced that it is ...

What's is going on here with the print display in my Mathematica? Has anyone else seen this behavior? The notebook looks completely normal in the frontend display. This mess appears in the print ...

MMA can't solve this integral: $$\int_0^{\pi } \text{sinc}(x) \text{Si}(2 x) \, dx$$ The I use FourierSinTransform to find closed form,but I try a verify result is ...