Mathematica

Handheld mathematica
On 2/25/2010 1:52 AM, Helen Read wrote: On 2/24/2010 6:21 AM, ibmichuco(a)hotmail.com wrote: Sigh, I don't want a copy of Mathematica on a PDA, as I mentioned at the beginning of the post, much less an app for cloud computing. I want neither a calculator with augmented reality nor one t... 12 Jun 2010 06:05

might be useful
As apology for my silly question, I'd like to provide a code snippet I wrote a while ago. Sometimes the problem arises to solve an equation/a set of equations not for a variable, but for an expression. Examples: In[1]:= Isolate[eqn:(_Equal|{_Equal ..}),expr_,elim_:{}]:= Block[{tmp}, Solve[GroebnerBasis[Subtract... 12 Jun 2010 06:05

Dyads
I searched the documentation for information on dyads; but, was unable to find anything. Is there a Dyad function in Mathematica 7.0.1? --V ... 12 Jun 2010 06:05

can't get ListVectorPlot3D to work.
Hey, I faced the same problem as you. just wonder how did you solve this? My situation is exactly like yours. I need to plot out some constant vectors at some given points. ... 11 Jun 2010 09:12

LogicalExpand and BooleanConvert
Hi, Is is possible to get some information of the algorithm that is used for converting a boolean function to the disjunctive normal form (Sum of Products) using LogicalExpand and BooleanConvert? The reason for this question is that getting the minimal disjunctive normal form is NP-hard. What is the "stopp... 11 Jun 2010 09:12

Lauching application from an icon
Is there some way to start a Mathematica application from an icon? I tried using a batch file to no avail, e.g. @echo off "C:\Program Files\Wolfram Research\Mathematica\7.0\Mathematica.exe" - run KernelExecute[Get["MyPrograms`StartDialog`"]] There are only two command-line options shown here:- http://refe... 1 Jul 2010 08:50

Setting Attributes for Function Generated Parameters
On 6/11/2010 2:09 AM, telefunkenvf14 wrote: Group: My goal is to generate a list of symbolic parameters that other functions in a package can Map[] over. For sake of example, suppose I define the following 'utility' function as part of a larger package. In[1]:= ClearAll["Global`*"] In[2]:= share... 11 Jun 2010 08:07

SQL question, Can I do something like Rest[] and Most[]
I need some help not directly related to doing something in Mathematica, but rather in SQL (another functional language) and wondered if anyone here had some insight into it. I have a simple data base table "timeseries" with three fields id values datetime The table has a few thousand rows of data I nee... 12 Jun 2010 06:05

3D plot of hemisphere pushing into a triangular membrane or surface
I'd like to create a 3D plot of some kind with 2 key elements. 1. something that looks like a membrane stretched across a unit triangle with coordinates {{1,0,0}, {0,1,0},{0,0,1}} 2. a hemisphere that would press up from behind the membrane Basically a hemisphere pushing up through or intersecting a plane. ... 11 Jun 2010 02:42

Custom ContourLabels in Contour Plots
I don't recall if I ever got an answer to that specific question. There was a change in the way ContourLabels works in Version 6 (or maybe 7) so you now use: ContourLabels -> Automatic for contour labels in tooltips only and ContourLabels -> True for explicit "printed" contour labels but no tooltips. But I'm n... 11 Jun 2010 02:42