11.7.3 Can you answer these questions?

11.7.3.1 Computational implementation of mathematical operations

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311140

I admit this is a rather broad question/request, but I think it deserves attention from this community. 
Mathematica affords remarkable range of mathematical programming, by which I mean techniques for ... 
[calculus-and-analysis]
 

asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 Score of 3

11.7.3.2 Specify an embedding of a planar multigraph

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311236

I haven't found a way in Mathematica to specify an embedding of a planar graph; I've looked through the documentation and have read elsewhere on this forum. Here's an example of what I mean. Here is ... 
[graphs-and-networks]
 

asked by Justin Lanier https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1182 Score of 1

11.7.3.3 Calculating the covariant derivative of Ricci scalar

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311227

I use the following code to calculate the Einstein tensor. 
Now I'm trying to add new terms to the Einstein tensor: 
$ G'_{\mu\nu} = G_{\mu\nu}-  \frac{1}{3} \left[ \left(  \frac{1}{4} R^2 + \nabla_\... 
[calculus-and-analysis] [symbolic] [physics] [tensors] [differential-geometry]
 

asked by Dr. phy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=65669 Score of 1