https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222002
I would like to clear all definitions of the form f[1,...] in such a way that f[2,...] remain unaffected.
The two methods I know to clear variables don’t seem to apply to this situation:
Pattern
asked by WillG https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=59634 10 votes
answered by Simon Woods https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=862 15 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222252
I have acquired many sets of data, which all represent a single function, but which are randomly rescaled by a constant (due to the measurement specifics). I’m looking to effectively stitch them ...
asked by ChaSta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=48457 9 votes
answered by aooiiii https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=68990 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=221934
Two different examples of same problem:
In: Cases[{f^2, g^3, k^p, h}, x_^n_ -> n] Out: {2,3,p} # The result misses the exponen of h, '1'
The same problem in a different context:
asked by MaxB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66077 8 votes
answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 11 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=221984
Suppose I have a set of points pts, from which I generate a Voronoi diagram VD:
pts = RandomReal[{-1, 1}, {100, 2}]; VD = Show[VoronoiMesh[pts], Graphics[{Red, Point[pts]}]] Now, as per the ...
asked by TumbiSapichu https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53229 7 votes
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222037
Using an answer to this question (Working with Dirac Gamma Matrices using FeynCalc - A simple problem), I defined
Clear[] SetAttributes[, Listable] [_] := If[ == 0, KroneckerProduct @@ ...
asked by FB20 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72314 6 votes
answered by Chanto https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35091 4 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222285
I have an expression of the form
expr = 3*(a.b)*(c.d)*f[x] + 5*(m.n)*(p.q)*(r.s)*f[y] and want to extract all possible subexpressions matching the pattern ((_).(_))*f[_]. Expected result (in ...
asked by Shadowray https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47416 6 votes
answered by Marius Ladegård Meyer https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=22099 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222105
I want to use geometric shapes in Mathematica to build complex shapes and use my raytracing algorithm on it. I have a working example where we can get the intersections from a combination of a Cone[] ...
asked by Tomi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36939 6 votes
answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 5 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11819
In today’s news, scientists found a bright object on one of Curiosity’s photos (it’s near the bottom of the picture below). It’s a bit tricky to find - I actually spent quite some time staring at the ...
asked by Victor K. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1351 197 votes
answered by Niki Estner https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=242 255 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=573
I would like to list all possible times in a 12-hour period, where the hour hand overlaps the minute hand completely. This is really a question about three distinct things - to be done in Mathematica ...
asked by Steve D https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=191 15 votes
answered by Verbeia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8 21 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26336
I am wondering how to implement the multi-peak detecting and fitting in Mathematica.
Following is an example of fitting the data using three peaks (such that the
data ~ peak1 + peak2 + peak3).
asked by Everett You https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1389 54 votes
answered by Silvia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=17 54 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8586
I am trying to use the Export command to convert a list of plots into a *.gif file, and the
command runs and executes well, but I can’t find the file! Where is it supposed to go? Did it
even work?
asked by Patrick Da Silva https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1785 37 votes
answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 49 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3242
For instance, is there some way I can say "let A and B be arbitrary real \(m\times n\) and \(k\times m\) matrices,
Simplify[Transpose[Transpose[A].Transpose[B]]]" and Mathematica would simplify it
to B.A?
asked by Niki Estner https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=242 61 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=6669
I understand Mathematica can’t assign the results of a Solve to the unknowns because there may be more than 1 solution. How can I assign the 4 values of following result to variables?
asked by stevenvh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1450 52 votes
answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 33 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=2930
I have a For loop (with i as a counter), which calculates different values (y1, y2, y3,...) as a function of the variable x. How can I create a table/matrix which contains i lines, each line ...
asked by Solarboy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=727 10 votes
answered by Mr.Wizard https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=121 14 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=221938
I have to manipulate huge expressions that are rational functions of many (30) variables
with integer coefficients. Storing them just as a ratio of two polynomials would be
impractical. But they can ...
asked by Vladimir Reshetnikov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7288 2 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=222179
apparently my computer has problems when I try to perform a calculation with TensorContract.
In particular, with the second answer to my previous question Contracting indices in lists, I want to ...
asked by FB20 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72314 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=221941
I’m working through MMA Cookbook by Mangano, page 54. He shows Map is a compact form of Fold function. Is using Fold function important?
myMap3[f_, l_] := Fold[Prepend[#1, f[#2]]&, {}, l]
asked by code9910743 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=59860 2 votes