6.12 Tuesday, October 13, 2015

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Top new questions this week: 
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[Progress bar for FullSimplify] http://mathematica.stackexchange.com/questions/96602/progress-bar-for-fullsimplify

Sometimes FullSimplify takes a really long time and it is not really clear if it makes sense to wait another half an hour in hopes for it to finish, or if it will actually take three years in which ...

- asked by Kagaratsch (18 votes), answered by Sjoerd C. de Vries (26 votes)

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[Construct a master curve from data] http://mathematica.stackexchange.com/questions/96393/construct-a-master-curve-from-data

I will try to be as informative as possible.

Clear["Global`*"] 
 
I have the following data 
 
data91 = {{-0.209091`, 2.89296`}, {0.281818`, 2.92958`}, {0.8`, 
    2.97535`}, {1.28182`, 3.03028`},  ...

- asked by dimitris (11 votes), answered by Sjoerd C. de Vries (17 votes)

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[Upper bound "Vicious nearest neighbour" algorithm suggestions] http://mathematica.stackexchange.com/questions/96691/upper-bound-vicious-nearest-neighbour-algorithm-suggestions

I am asking a question based on this question from the sister site MSE.

In an effort to make this a self-contained question, I include the fiorst documented posing of the problem by Robert Abilock in ...

- asked by martin (10 votes), answered by Arnoud Buzing (2 votes)

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[Symbolic sum of Stirling numbers gives wrong answer] http://mathematica.stackexchange.com/questions/96575/symbolic-sum-of-stirling-numbers-gives-wrong-answer

This issue originated from my attempt to answer a question on MathOverflow:

 Sum[StirlingS2[i, 2], {i, 0, n}]

on Mathematica 10.2.0.0 gives as answer \(\frac {1}{2} (-3 + 2^{1 + n} - 2 n)\), while the ...

- asked by Carlo Beenakker (10 votes), answered by Bob Hanlon (6 votes)

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[Map a function of several arguments] http://mathematica.stackexchange.com/questions/96803/map-a-function-of-several-arguments

I have three lists, e.g.

list1 = {{a,b,...}}; 
list2 = {{1,2},{3,4},...}; 
list3 = {{x,y},{z,w},...}; 
 
 
and a function 
 
f[x_,y_]:=(* whatever it does *);

I need to get

...

- asked by T. Rihacek (10 votes), answered by Kuba (12 votes)

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[Why does Nearest not support Sqrt?] http://mathematica.stackexchange.com/questions/96588/why-does-nearest-not-support-sqrt

Simple examples with two points

nf1=Nearest[{{0, 0}, {Sqrt[2], Sqrt[2]}}] 
 
nf1[{0, 0}, {All, 2.1}] 
 
 
gives 
 
{{0, 0}}

This is incorrect. If we test bigger radius, we can find that Mathematica takes ...

- asked by matheorem (9 votes)

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[Unique Element in List] http://mathematica.stackexchange.com/questions/96747/unique-element-in-list

I have a list a, and want to find out whether there is a unique element in the list.

For instance a=x,y,z,y,x has an unique element (z), while a=1,2,3,4,5,1,2,3,4,5 has no unique element.

There ...

- asked by NicoDean (8 votes), answered by J. M. is back. (11 votes)

================================== Greatest hits from previous weeks: ==================================

[1 Plot, 2 Scale/Axis] http://mathematica.stackexchange.com/questions/627/1-plot-2-scale-axis

I would like to plot those two datasets on top of each other. But they have very different range on the \(y\) axis. How can I have two different axis?

I found the following on the help menu but quite ...

- asked by 500 (87 votes), answered by ArgentoSapiens (83 votes)

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[Mathematica Minecraft] http://mathematica.stackexchange.com/questions/19669/mathematica-minecraft

Some time ago I asked myself: with all these great graphics and interactive capabilities of Mathematica, what kinds of 3D games can be implemented in it? And the answer which came to mind is ...

- asked by faleichik (131 votes), answered by faleichik (175 votes)

================================== Can you answer these? ==================================

[Examples of using Mathematica to solve matrix equations symbolically] http://mathematica.stackexchange.com/questions/96405/examples-of-using-mathematica-to-solve-matrix-equations-symbolically

Suppose we want to solve a linear system like

\[ \left \lbrack \begin {array}{cc}M& S\\ -S^{T}&0 \end {array} \right \rbrack \left \lbrack \begin {array}{c} x\\ y\end {array}\right \rbrack = \left \lbrack \begin {array}{c} f \\g \end {array} \right \rbrack \]

- asked by fred (5 votes)

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[General suggestions to accelerate Simplify and FullSimplify] http://mathematica.stackexchange.com/questions/96476/general-suggestions-to-accelerate-simplify-and-fullsimplify

To my understanding, the function Simplify[] and FullSimplify[] work by applying a series of built-in transformation rules to the expression and trying to minimize the TransformationFunctions in the ...

- asked by Yuchen Xie (1 vote)

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[External and internal Assumptions on ‘PiecewiseExpand‘ and ‘Mod‘] http://mathematica.stackexchange.com/questions/96596/external-and-internal-assumptions-on-piecewiseexpand-and-mod

After this question I’m intrigued about the different behaviors depending where and how the assumptions are given.

PiecewiseExpand[Mod[n, m]]    (* case #1 *) 
(* Mod[n, m] *) 
 
PiecewiseExpand[Mod[n,  ... 

- asked by rhermans (5 votes)