8.10.1 Top new questions this week

8.10.1.1 Stretching a mesh
8.10.1.2 How to have the units for energy show as kW h instead of h kW?
8.10.1.3 List all homeomorphically distinct irreducible connected acyclic graphs of size 10 ("Good Will Hunting" problem)
8.10.1.4 Evaluating expressions by applying corresponding rules stored in another list
8.10.1.5 Is there an easy way of drawing a part of a circle used in a complex contour?
8.10.1.6 How can I add a vertical spacing in a `CheckboxBar`?
8.10.1.7 Is there a function to generate subsets allowing duplicates?
8.10.1.1 Stretching a mesh

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265553

Imagine I want to stretch a mesh with a 'rubberband-type' effect. That is, upon and elastic stretch from both side edges, the mesh centres simply scale as follows 
 
where the points are seeds for ... 
[differential-equations] [physics] [mesh] [cells]
 
asked by sam wolfe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=64001 Score of 14
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 9
8.10.1.2 How to have the units for energy show as kW h instead of h kW?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265486

I observe the following in Wolfram Language: 
 Quantity[ 1, "Kilowatt hours" ] (* or "Kilowatts" * "Hours" *) 
 
(* 1 h kW *) 
 
That looks ... 
[front-end] [notebooks] [units]
 
asked by gwr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=764 Score of 13
answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 11
8.10.1.3 List all homeomorphically distinct irreducible connected acyclic graphs of size 10 ("Good Will Hunting" problem)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265641

In the movie Good Will Hunting the opening math problem is: 
 
Display all homeomorphically distinct irreducible connected acyclic graphs (trees) of size 10 
 
Recall that a tree (acyclic graph), is a ... 
[graphs-and-networks]
 
asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 Score of 11
answered by Adam https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74641 Score of 7
8.10.1.4 Evaluating expressions by applying corresponding rules stored in another list

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265482

I have a list of expressions: 
 {x,x^2,x^3} 
and a list of rules 
 {x->1,x->2,x->3} 
How can I get ... 
[list-manipulation] [replacement] [array] [rule]
 
asked by Patchouli Nine https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=85001 Score of 9
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 15
8.10.1.5 Is there an easy way of drawing a part of a circle used in a complex contour?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265446

I see the Descarta2D package can easily draw some figures. 
Unfortunately, the package is not to be found and runs on MMA 2021. 
I do want to do some complex contour calculations and need some diagrams. 
... 
[plotting] [graphics]
 
asked by janhardo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84966 Score of 9
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 11
8.10.1.6 How can I add a vertical spacing in a `CheckboxBar`?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265375

I have an example here from the solution of @krasten 7. In this I would like some vertical spacing between the checkboxes. Any ideas? 
... 
[plotting] [manipulate] [grid-layouts] [spacing] [checkboxbar]
 
asked by Rupesh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63381 Score of 9
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 10
8.10.1.7 Is there a function to generate subsets allowing duplicates?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=265431

I allow them to be chosen more than once (e.g. allow  {1,1} ). 
(A subset means every element is chosen once or less) 
 
Also I neglect the order (e.g. ... 
[permutation] [subset]
 
asked by Y.D.X. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=85629 Score of 7
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 8