9.42.1 Top new questions this week

9.42.1.1 Numbers in love - can we reproduce Giacomo Balla's extruded digits?
9.42.1.2 Are there any errors that are not controlled by Quiet?
9.42.1.3 Given square matrices A and B, how to solve T obeys Transpose[T]. A . T = B?
9.42.1.4 Understanding NDSolve's implementation of the method of lines
9.42.1.5 Replicating Sol LeWitt's skeletal geometries
9.42.1.6 Unicode symbols not encoded properly in BarcodeImage[] in Mathematica 13.3
9.42.1.7 Sum of sinusoids at the same frequency but with different amplitudes and phases
9.42.1.1 Numbers in love - can we reproduce Giacomo Balla's extruded digits?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293976

Giacomo Balla (1871 - 1958) was an Italian painter best known as a key proponent of Futurism. In his paintings, he depicted light, movement and speed. Balla's oil painting "Numeri innamorati"... 
[graphics] [graphics3d] [generative-art]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 12
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 16
9.42.1.2 Are there any errors that are not controlled by Quiet?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293919

I believed that using Quiet, all message output would be controlled. 
 Quiet@Plot3D[x, {x, 1, 2}, {y, 1, a}] 
Quiet@ContourPlot[x + y == 1, {x, 1, 2}, {y, 1, a}] 
 
... 
[warning-messages] [quiet]
 
asked by Milk https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=21427 Score of 7
answered by Sjoerd Smit https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=43522 Score of 9
9.42.1.3 Given square matrices A and B, how to solve T obeys Transpose[T]. A . T = B?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293896

Dear Mathematica experts, 
Given two square matrices, A and B, how do we use Mathematica to solve a matrix T such that T satisfies this matrix equation? (Here we have A,B,T $\in$ general linear matrix ... 
[equation-solving] [matrix] [mathematical-optimization] [linear-algebra] [nonlinear]
 
asked by zeta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=95437 Score of 6
answered by Hans Olo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61267 Score of 3
9.42.1.4 Understanding NDSolve's implementation of the method of lines

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293950

In order to better understand the  MethodOfLines  flag, I tried comparing the results of  NDSolve  for a driven heat equation with a ... 
[differential-equations] [implementation-details]
 
asked by phonon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=95490 Score of 6
answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 5
9.42.1.5 Replicating Sol LeWitt's skeletal geometries

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293884

Sol LeWitt (1928 - 2007) was an American artist linked to various movements, including conceptual art and minimalism. He used lines, geometric solids, patterns, formulas and permutations to create his ... 
[graphics] [graphics3d] [generative-art] [polygons] [polyhedra]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 6
9.42.1.6 Unicode symbols not encoded properly in BarcodeImage[] in Mathematica 13.3

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293852

Trying to generate a simple QR code with  or U+2190.  I got varying results: the same in Mathematica versions 12.3 and 13.1 but very different in version 13.3. 
 
Mathematica 13.3 was updated to ... 
[character-encoding] [broken-code] [unicode] [version-13.3]
 
asked by David Caliri https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12119 Score of 6
answered by Domen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75628 Score of 7
9.42.1.7 Sum of sinusoids at the same frequency but with different amplitudes and phases

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=293819

Three sinusoids at the same frequency are superimposed: 
 Cos[3.1 - t] + 5 Cos[/4 + t] + 2 Sin[0.3 + t] 
How can the resulting oscillation be stated in the following ... 
[equation-solving] [simplifying-expressions] [fourier-analysis] [trigonometry]
 
asked by saturnscalypso https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=95760 Score of 6
answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 5