Questions tagged [code-request]
Questions on finding existing Mathematica implementations or expertise to address a clearly stated problem.
558 questions
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ToRules that preserves conditions that cannot be written as Rules
I would love to have a ToRules that can act on say Reduce output that preserves conditions that cannot be written as rules. Something that creates something like
...
- 4,931
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Solution of the system of Equations using iterative Varga's Algorithm?
I am working on research article with link https://www.sciencedirect.com/science/article/abs/pii/S0378475421004560
It contains dimensionless non-linear equations mentioned in article.
I am writing the ...
- 207
5
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3
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306
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High Performance Polygon Union
I need to find solution to combine large numbers of intersecting polygons, much faster than Mathematica's RegionUnion, so I'm looking at how to use external ...
- 2,072
3
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2
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338
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Alternative way to invert series mathematica
I tried inverting a series in mathematica, code will be provided below, but when I go and check to see if the series I obtained is a decent approximating inverse I get completely different results. I ...
- 221
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Trying to invert a series in Mathematica
I have the function J in two variables $m$ and $l$, which I obtained doing a series for $e$ and replacing $m \rightarrow e\cdot m$ and $l\rightarrow e\cdot l$, given by
\begin{align}
J(l,m):=& -2 \...
- 221
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Solving a Partially Filled 4×4 Magic Square [closed]
A magic square is a mathematical game with a long history. It requires that the sum of the numbers in each row, each column, and both diagonals be equal, and that each number in the grid be unique. ...
user107541
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How to design code for solution of the system of Equations?
I am studying a research article of fluid mechanics with title ``Influence of mixed convection nanofluid flow over a rotating sphere in
the presence of diffusion of liquid hydrogen and ammonia''
The ...
- 207
1
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1
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Round Cut diamond 3D
Does Mathematica have the ability to create 3D graphics for round-cut diamonds?
Or can I import and export from solidworks.
Thank you for your time.
- 39
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9
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Determine two ellipses common tangent via projective geometry + dual conics + linear algebra
Suppose we have two ellipses. The goal is to find their common tangents.
Consider these toy models:
...
- 2,072
5
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1
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153
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is there a way to use PlotLayout option in the ListPlot environment and produce each plot in different colours?
Suppose I have the following data file, which I need to plot using the ListPlot with option PlotLayout -> "Row"
<...
- 2,836
3
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3
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362
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Finding the maximum number of times a line can interesect with a list of points?
Suppose $f:\mathbb{Q}\cap[0,1]\to\mathbb{Q}\cap[0,1]$, where $f(p/q)=(p+q)/(pq)$ for integers $p$ and $q$.
Question: How do we find the maximum times a non-vertical line with a fixed slope can ...
- 81
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Returning a sequence from a function
Let's say I want to take this plot:
r = 3;
DensityPlot[x^2 + y^2, {x, -r, r}, {y, -r, r}]
and make the x and y limits be returned from some function (maybe because ...
- 55
0
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1
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155
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Converting HurwitzZeta function to PolyGamma function
A generalization produces a result in terms of Zeta[s,a] function, which can be converted to PolyGamma[s-1,a] using the ...
- 667
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0
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132
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Implementing Robin and Dirichlet boundary conditions
I am trying to solve this second order ODE.
This is done by utilizing these two boundary conditions, first being a Dirichlet boundary at one of the edge, xb.
The second boundary condition is the ...
- 51