8.16.1 Top new questions this week

8.16.1.1 Association vs Pair - Creation performance, Selection performance
8.16.1.2 Can Mathematica calculate this elliptic, triple integral?
8.16.1.3 Why does DSolve give 1/0 on this first-order Riccati ODE?
8.16.1.4 Getting the "correct" branch of a complex function
8.16.1.5 How to remember evaluation across sessions?
8.16.1.6 Applying Style to Around objects
8.16.1.7 Neumann boundary conditions are not satisfied
8.16.1.1 Association vs Pair - Creation performance, Selection performance

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268297

Suppose that we 
 
... 
[list-manipulation] [functions] [performance-tuning] [function-construction] [filtering]
 
asked by imida k https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34532 Score of 11
answered by Henrik Schumacher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=38178 Score of 15
8.16.1.2 Can Mathematica calculate this elliptic, triple integral?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268330

 Integrate[(4 a b/Pi) (a^2 + b^2 - 2 a b Cos[c])^(1/2), {a, 0, 1}, {b, 
0, 1}, {c, 0, Pi}] 
 
 
I'm using basic plan, it gives me the result like that. 
The ... 
[calculus-and-analysis] [numerical-integration] [special-functions]
 
asked by jerryed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=85712 Score of 8
answered by Hans Olo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61267 Score of 21
8.16.1.3 Why does DSolve give 1/0 on this first-order Riccati ODE?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268252

This is from a textbook. 
Why does  DSolve  give  1/0  using Mathematica v13.0.1 on Windows 10? Does it happen using other versions? ... 
[differential-equations]
 
asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 7
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 5
8.16.1.4 Getting the "correct" branch of a complex function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268245

This stuff always trips me up. I'm trying to plot a function and I think that the plot looks good in one region and isn't really what I'm expecting in another: 
The right side of the plot is what I am ... 
[plotting] [complex] [branch-cut]
 
asked by Diffycue https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46327 Score of 7
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 Score of 5
8.16.1.5 How to remember evaluation across sessions?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268381

I am performing a very time-consuming symbolic calculation. 
When I reopen a saved Mathematica notebook, it takes quite a long time to evaluate. 
Is there an option to tell Mathematica to remember the ... 
[evaluation] [notebooks] [memory] [memoization]
 
asked by Yrefef https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=86577 Score of 6
answered by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397 Score of 7
8.16.1.6 Applying Style to Around objects

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268387

How do I apply  Style  to  Around  objects? Are there any workarounds, resource functions or custom solutions available? Thanks for ... 
[plotting] [style] [stylesheet]
 
asked by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 Score of 6
8.16.1.7 Neumann boundary conditions are not satisfied

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268326

I am solving a system of 3 ODEs and I want to implement neumann BC (d/dx = 0 @x=0). However, the solution does not seem to obey neumann BC when parameter A1/A2/A3 is non zero, as I notice that the ... 
[differential-equations] [finite-element-method]
 
asked by joe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=85242 Score of 5
answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 7