6.18.1 Top new questions this week

6.18.1.1 Deleting duplicates after n-occurrences
6.18.1.2 How can I enclose a closed curve with another identical slightly bigger closed curve?
6.18.1.3 Glowing weighted graph (network): vertexes and edges
6.18.1.4 Why does it take so long to Quit?
6.18.1.5 How to use Flatten to a specific element of a list
6.18.1.6 Parsing error [bug?] with systems of nonlinear PDEs, Mathematica 12.0.0
6.18.1.7 Collecting common powers of terms
6.18.1.1 Deleting duplicates after n-occurrences

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228775

As a generalization of  DeleteDuplicates , I want to delete duplicates from a list, but only after  n  number of duplicates. 
Say, <... 
[list-manipulation] [filtering]
 
asked by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 11 votes
answered by ciao https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=11467 16 votes
6.18.1.2 How can I enclose a closed curve with another identical slightly bigger closed curve?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228524

I have a closed curve. I am trying to enclose this closed curve with another closed curve, which looks identical in the shape of the first closed curve, but slightly bigger. How to do this? 
... 
[plotting]
 
asked by acoustics https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53981 10 votes
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 17 votes
6.18.1.3 Glowing weighted graph (network): vertexes and edges

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228738

I am trying to find a way (desirably simple and performance/speed optimized for larger graphs) to do the following : 
 
Styling graph vertexes by glow-effect and its intensity depending on ... 
[graphics] [graphs-and-networks] [visualization]
 
asked by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 8 votes
answered by flinty https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72682 5 votes
6.18.1.4 Why does it take so long to Quit?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228484

Running  Quit  is a core task repeated many times in any debugging/development cycle. Its efficiency is therefore important and yet in my set-up it is taking ... 
[performance-tuning]
 
asked by Ronald Monson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2249 8 votes
answered by Ronald Monson https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2249 9 votes
6.18.1.5 How to use Flatten to a specific element of a list

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228579

Let's say I have a list  {{1, 2, 3}, {4, 5}, ...} . I want to make the list look like  {1, 2, 3, {4, 5}, ...} . I am doing this way: 
... 
[list-manipulation]
 
asked by Arghya Datta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=51545 7 votes
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 10 votes
6.18.1.6 Parsing error [bug?] with systems of nonlinear PDEs, Mathematica 12.0.0

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228692

I find the following behavior using 12.0.0.  (EDIT: I asked a friend to try it in 12.1.1 and he finds the same result.) 
Here is a system of coupled nonlinear PDEs that ... 
[bugs] [finite-element-method]
 
asked by Will.Mo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=49788 6 votes
6.18.1.7 Collecting common powers of terms

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=228768

How to collect the common powers appearing in the following function using MATHEMATICA, such that if I input 
 (4 m^6)/((m - n)^2 (m + n)^4 (2m+n)^4) 
 
then the ... 
[expression-manipulation]
 
asked by Erosannin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73763 6 votes
answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 3 votes