9.31.1 Top new questions this week

9.31.1.1 Deleting duplicated lists containing a placeholder
9.31.1.2 Code golf chromostereopsis illusion
9.31.1.3 Double sorting by two criterions using Sort
9.31.1.4 Split a sequence with conditions
9.31.1.5 Unexpected behavior of `Exponent`
9.31.1.6 How to make FactorInteger iterative?
9.31.1.7 Why is Around omitted when the uncertainty is zero?
9.31.1.1 Deleting duplicated lists containing a placeholder

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=290097

Some time ago I asked the question about Deleting list members by rule and received a variety of responses. 
I have a slightly different data set and here wish to delete list members whose third and ... 
[list-manipulation]
 
asked by Suite401 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42475 Score of 8
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 8
9.31.1.2 Code golf chromostereopsis illusion

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=289992

I am trying to maximally shorten the code (code golf) for chromostereopsis illusion by Akiyoshi Kitaoka: 
https://twitter.com/AkiyoshiKitaoka/status/1700061353346798019 
The point is to make it: (1) ... 
[plotting] [graphics] [generative-art]
 
asked by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 Score of 7
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 11
9.31.1.3 Double sorting by two criterions using Sort

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=290104

I was sorting a list of pairs of numbers firstly by second number then by first number. I wanted to use  Sort  since we can use  #1  ... 
[list-manipulation] [sorting]
 
asked by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 Score of 7
answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 Score of 6
9.31.1.4 Split a sequence with conditions

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=290092

I need a function which splits a sequence of arbitrary length 
at  x  random points and which guarantees that each partition (bin) contains a minimum of ... 
[list-manipulation] [random] [algorithm]
 
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 6
answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 8
9.31.1.5 Unexpected behavior of `Exponent`

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=290121

According to  Exponent : 
 
 Exponent[expr, form]  gives the maximum power with which  form  appears ... 
[bugs] [algebraic-manipulation]
 
asked by user688486 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=90667 Score of 6
9.31.1.6 How to make FactorInteger iterative?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=290151

I want to factorize big numbers like 10^100.  FactorInteger  with no  Automatic  option can take a lot of time and as I know there ... 
[parallelization] [number-theory] [factorization]
 
asked by   https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=94387 Score of 5
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 4
9.31.1.7 Why is Around omitted when the uncertainty is zero?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=290159

I have a list of values with errors and I use  Around[x, dx] . Some of those values have an error of zero though. Mathematica removes the ... 
[numerical-value] [around] [head]
 
asked by Failboy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=94391 Score of 5
answered by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397 Score of 6