9.41.1 Top new questions this week

9.41.1.1 How can we reproduce Eugen Jahnke's drawing of a complex function?
9.41.1.2 How can we plot Man Ray's "Shakespearean Equation" w == e^(1/z)?
9.41.1.3 Diploria labyrinthiformis - can we reproduce Ernst Haeckel's drawing of a brain coral?
9.41.1.4 Why does Mathematica not recognize a convergent series?
9.41.1.5 Numerically solving radial Schrödinger equation with Yukawa potential
9.41.1.6 Convert MATLAB code solving 1D wave equation via FFT using ode45 into Mathematica code
9.41.1.7 Can you explain this substitution rule?
9.41.1.1 How can we reproduce Eugen Jahnke's drawing of a complex function?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293590

Eugen Jahnke (1863 - 1921) studied mathematics and physics at the Humboldt University of Berlin. He became a professor at the Berlin Mining Academy in 1905. 
 
His "Tables of Functions with ... 
[plotting] [graphics3d] [complex] [generative-art]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 21
answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 14
9.41.1.2 How can we plot Man Ray's "Shakespearean Equation" w == e^(1/z)?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293490

1. Man Ray 
Man Ray (1890 - 1976) was an American artist who spent most of his career in Paris. He was a significant contributor to the Dada and Surrealist movements. Man Ray produced major works in a ... 
[plotting] [complex] [generative-art]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 16
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 12
9.41.1.3 Diploria labyrinthiformis - can we reproduce Ernst Haeckel's drawing of a brain coral?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293729

Ernst Haeckel (1834 - 1919) was a German philosopher, physician, artist and professor of zoology at the University of Jena. He promoted and popularised Charles Darwin's work in Germany. 
 
The published ... 
[graphics] [graphics3d] [generative-art] [fractals]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 13
answered by flinty https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72682 Score of 10
9.41.1.4 Why does Mathematica not recognize a convergent series?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293501

Bug introduced in 12.1, persisting through 13.2 or later 
 
In one of my program run on Wolfram Cloud I run the command: 
  Sum[(-1)^(Floor[k/2])/(k+1),{k,0,Infinity}] 
 
... 
[bugs] [summation] [sum]
 
asked by drer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=39677 Score of 11
answered by bmf https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=85558 Score of 7
9.41.1.5 Numerically solving radial Schrödinger equation with Yukawa potential

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293700

I am trying to solve the radial Schrödinger equation using  NDEigensystem  but I am running into some issues. There are posts about doing this (see here for example), ... 
[differential-equations] [finite-element-method] [physics]
 
asked by MarcosMFlores https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84923 Score of 7
answered by Michael Seifert https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27813 Score of 10
9.41.1.6 Convert MATLAB code solving 1D wave equation via FFT using ode45 into Mathematica code

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293617

I don't quite understand the process of solving differential equations by MATLAB. It seems that it doesn't need the explicit function to specify the required solution, but only needs to input the ... 
[differential-equations] [fourier-analysis] [matlab]
 
asked by mozeq https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=67140 Score of 7
answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 11
9.41.1.7 Can you explain this substitution rule?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293507

This rule behaves as I expect: 
 b . c + a . b . c /. (b . c) -> x 
(* x + a . x *) 
 
I would expect the same result with this: 
... 
[replacement] [pattern-matching]
 
asked by mikado https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36788 Score of 7
answered by Roland F https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=92018 Score of 0