4.14.3 Can you answer these questions?

4.14.3.1 GraphicsComplex dynamic colors
4.14.3.2 how to efficiently generate all directed graphs with 6 vertices
4.14.3.3 Bug in Limit in version 11.1.0
4.14.3.1 GraphicsComplex dynamic colors

http://mathematica.stackexchange.com/questions/141489/graphicscomplex-dynamic-colors

 
I have a fairly large GraphicsComplex (surface mesh with more than several thousand vertices) and I want to visualize a scalar function that is defined on the vertices. I map the function to vertex  ...
 
- asked by Beginner 6votes
4.14.3.2 how to efficiently generate all directed graphs with 6 vertices

http://mathematica.stackexchange.com/questions/141681/how-to-efficiently-generate-all-directed-graphs-with-6-vertices

 
I am attempting to generate all non-isomorphic directed graphs with 6 vertices using command ListGraphs[6, Directed].But it does not work efficiently and takes a month producing nothing. 
 
Can anyone  ...
 
- asked by Mike 6votes
4.14.3.3 Bug in Limit in version 11.1.0

http://mathematica.stackexchange.com/questions/141233/bug-in-limit-in-version-11-1-0

 
Bug introduced in version 11.1.0 
 
 
 
The infinite limit 
 
Assuming[a>0&&b>0, 
Limit[((1+a)*b*x)/Sqrt[1+(1+a)*b*x*((1+a)*b*x+Sqrt[1+(1+a)^2*b^2*x^2])], 
x->Infinity]] 
 
 
gives the  ...
 
- asked by Roman 5votes