# All Questions

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### How can I draw ternary plot by these data?

I have these data and want to draw similar fifures in mathematica. any one can help me? ...
2k views

### All curves in plot have the same style. Cannot be fixed with Evaluate[]

Usually, when I plot multiple curves in Mathematica Plot[{x,x^2,x^3},{x,0,1}] they are given different colors. However, if I try to construct a list inside the <...
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### Simple qualitative sketches in Mathematica

I have always used Inkscape for sketches like the one below. Nonetheless, I am pretty certain that Mathematica is capable of creating something similar. How would I ...
12 views

### Plotting topological defects with VectorPlot

I have been trying to create a table with the graphs of the lowest winding number topological defects that can appear in a nematic Liquid Crystal. That is what I have been able to do so far: ...
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### How to type greek letters on mathematica.stackexchange [migrated]

I usually ask questions on this website, and many of them contain greek letters in the code part. For instance: \[CapitalTheta]=0 After a while, someone edits ...
318 views

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### Fan beam tomographic projections in Mathematica

I am embarking on a little project to redo some of my old Matlab image processing code in Mathematica. I am particularly interested in tomography, and I know of the ...
113 views
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### Why isn't LowPassFilter working for these parameters?

First I define a function, just a sum of a few sin waves at different angular frequencies: ...
79 views

### Python Convolve2D functionality in Mathematica

I am new to mathematica. I am looking for an alternative for scipy.signal.convolve2d. I did find functions like ListConvolve, ...
54 views

### Henon Map Equation Trekker

I am trying to make an Equation Trekker for the Henon map in the following way: ...
35 views

### Expectation of summation with symbolic indices

I am working on symbolic computations with mathematica. I faced an issue with taking expectation of a large expression involving summations with symbolic indices. Is it possible to take expectation ...
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### Any theorem which specifies the state (with energy $E$) with maximum entanglement [migrated]

Does there exist any theorem in quantum information which states that the particular state with energy $E$ is the state with maximum entanglement (or discord) among all possible state with the same ...
30 views

### A bug of PrincipalValue?

This question is related to this one, I encountered some weird outputs when trying to solve it. Here is the code: ...
24 views

### What does it mean that “there are no significant digits to display”?

So I substitued with the following values in my function T(x,n) and it gave me this red box with the value in the picture. When I hover over it, it tells me that there are no significant digits to ...
51 views

### Defined a function but it doesn't seem to work

I'm trying to implement the line-crossing algorithm on Mathematica and I seem to be having trouble getting it to work. More specifically, I would like to know what is causing the function to not ...
28 views

### License issue when USB-LAN stick is connected.

I have mathematica installed on my laptop which only have a wifi card. When I connect a USB-LAN adapter, even if it is not connected to the LAN socket, mathematica complains that the license is ...
24 views

### BSplineFunction defies numerical solution

I am trying to find an intersection between a straight line and a BSpline. The lines: ...
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Observe: ...
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### Where can I see a full list of Classify[“FacebookTopic”] results?

I can see that Classify function has some built in classifiers, like "FacebookTopic". For example, if I type "Should I take an ...
22 views

### PlotRange -> All for Show [duplicate]

I want to fit a gaussian function to a data below: ...
5k views

### Fastest way to calculate matrix of pairwise distances

It is a very common problem that given a distance function $d(p_1,p_2)$ and a set of points pts, we need to construct a matrix ...
2k views

### Find intersection of pairs of straight lines

I have a list of 24 points, in which two consecutive points (1st and 2nd, 3rd and 4th, …) are supposed to form a line: ...