# Questions tagged [mathworld]

Questions on Mathematica code found on the MathWorld site.

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### Using UtilitiesTypesetting package in Mathematica version 12.3 [duplicate]

I downloaded a notebook about conformal mapping from Wolfram MathWorld requires a package UtilitiesTypesetting, which cannot be loaded in Mathematica 12.3. How ...
• 51
485 views

### Irreducible representations and conjugacy classes for the octahedral group

We need a few things about the octahedral group (including reflection, perhaps even using double cover later on): Conjugacy classes Irreducible representations (irreps) in the form of matrices. Just ...
205 views

### Undocumented GraphComputationGraphProduct usage

According to Mathworld there is an undocumented function GraphComputationGraphProduct[G1, G2, "Cartesian"] To compute the cartesian graph product. Now in ...
• 1,979
493 views

### Replacement for GraphJoin

According to MathWorld >> GraphJoin, Mathematica could compute the join of two graphs with the GraphJoin command, part of ...
• 257
1 vote
295 views

### Summing over Prime Factors (without repetition)

Wolfram Mathworld (http://mathworld.wolfram.com/SumofPrimeFactors.html) describes a function sopfr(n), the sum of prime factors, which I currently need. This code doesn't work when I insert it in ...
402 views

### Geometry computations add-on for Mathematica?

I came across the problem of calculating the circumcenters of triangles symbolically within another algorithm (as well as possibly doing other similar geometry computations). I was hoping Mathematica ...
• 488
327 views

### Package MathWorld

I'm looking for MathWorld packages, but I can not find anywhere. I found an question that came very close but did not help me. I got lost on the site and did not find anything. I need to use the ...
• 9,145
1 vote
102 views

### Explanation of the following code which taken from mathworld

Can anyone explain to me how does this code function? ...
36 views

### How to fix <<MathWorldGraphs package cannot be opened? [duplicate]

From http://mathworld.wolfram.com/PaleyGraph.html I downloaded this notebook http://mathworld.wolfram.com/notebooks/GraphTheory/PaleyGraph.nb. The notebook contains the line ...
• 9,647
156 views

### Incompability between v5-6 and v10 with Graphs and Oriented Graphs pkgs?

Notice that "although the v6 Packages are available at the link in the answer above they are not fully compatible with v10". The errors 1, 2 and 3 in Mathematica 10 student edition may be ...
• 2,593
1 vote
135 views

### Constructing an I-graph

I am attempting to build I-graphs in MMA, i.e. the non-Generalized Petersen graphs, and I found some code from Eric Weisstein, but this is now outdated and doesn't run. I have attempted to switch the ...
• 13
273 views

### How can I load << MathWorldCurves?

I'd like to recreate in Wolfram Programming Cloud the plot in http://mathworld.wolfram.com/notebooks/SpaceCurves/Slinky.nb How can I load << MathWorldCurves...
2k views

I was trying to run some notebook I downloaded from MathWorld, but lots of them need << MathWorldCurves` I tried to google it , only to find this, but ...
• 739
656 views

### Drawing Cylindrical Segment with Graphics3D

For a visualization I need a combination of 3 Cylindrical segments to visualize the incident, reflected and refracted beam of light at a surface. I got as far as the following code. ...
• 2,861