Hi, "Programming in Mathematica" is the standard book for Mathematica Programming, the "Mathematica Programmer" collects mainly Roman Maeders articles in "The Mathematica Journal" and include interesting stuff like his polyhedron code. But it focus *not* on the programming techniques ... Both books are excelent ... The classes.m package is designed to show, that object oriented programming can be done in Mathematica. But nobody would consider it as more than an example that even a wonderfull functional programming language can be misused for nonsen...

On 12/13/05 at 3:41 AM, hattons@globalsymmetry.com (Steven T. Hatton) wrote: >Has anybody read both of Roman Maeder's books _The Mathematica >Programmer_ and _Programming in Mathematica_? I specifically mean >the out of print first volume of the former. Yes. I have copies of each within arms length of my desk. >Dose _The Mathematica Programmer_ give a significantly different >perspective than what is presented in _Programming in Mathematica_? I am not sure there is much difference in perspective. But there is a difference in the information covered. Prog...

Has anybody read both of Roman Maeder's books _The Mathematica Programmer_ and _Programming in Mathematica_? I specifically mean the out of print first volume of the former. Dose _The Mathematica Programmer_ give a significantly different perspective than what is presented in _Programming in Mathematica_? It is, I believe, the best source for information about the design of his Classes` package. The only other source I am aware of is an unavailable (other than buying the hardcopy) back issue of The Mathematica Journal. And, if my understanding is correct, that is not as com...

olfa wrote: > Hi Mathematica Community, > > First,wish you happy and successfull new year. > > For this 2nd problem in the same subject,I have this system to solve: > > Reduce[Not[ > ForAll[{aaP, abP, iP, jP, sP, tP, uP, xP, yP, zP}, > Implies[t == tP && i + x == iP + xP && y == yP && > j t + z == jP tP + zP && t x + z == tP xP + zP && > Floor[Log[j]/Log[2]] == Floor[Log[jP]/Log[2]] && > Floor[Log[x]/Log[2]] == Floor[Log[xP]/Log[2]] && x >= xP, > t x == tP x...

I think most people this entire discussion does not have any practical importance. Obviously something like this: 2*Unevaluated[1+1] 2 Unevaluated[1+1] is extremly unlikely to have any practical use. After all, we use Unevaluated when we want something to remain unevaluated, whereas here only two things can happen: either one will be left with Unevaluated[something] or the "something" will evaluate. Both of these outcomes are obsiously undesirable. Why should one ever use anything like this in a program? In fact if for some unimaginable reason somone neede...

On Fri, 22 May 2009 01:50:51 -0400 (EDT), skkaul wrote: > On May 10, 5:13 am, John Fultz <jfu...@wolfram.com> wrote: > >> <install= >> directory>/SystemFiles/FrontEnd/TextResources/UnicodeFontMapping.tr >> > Besides the comments, is there any documentation on this file? In > particular, what are type V and H entries, and what font is referenced > by -2? > > Thanks, > Shiva It's not documented because it's not intended for user consumption, although being able to edit it very rarely allows working around certain issues...

So far I could resist the temptation to participate in this discussion. However, in his mail Maxim Rytin presents some examples of which he thinks the result is unpredictable. Maybe there is some interest in how I predict the results of simple commands in which Unevaluated occurs. Of course these examples are of no practical interest. Unevaluated is meant to pass unevaluated arguments to a function body and as such it works perfectly. No one in practice is interested in (1+1)*Unevaluated[2+2]. The basic principle has been clearly explained by Andrzej Kozlowsky. Suppose we have a ...

I must agree about the debugger. I was very excited by the release of Workbench 1.0 because of the promise of a good debugger. I even took a course on it. The reality is that Workbench is so hard to use ( I can't bring in my old code and debug changes- it just doesn't work) that I never use it. So I'm back to using Print statements again. I love Mathematica but would love to have an easy to use debugger with break points, etc. Oh well. Cliff Nasser Abbasi <nma@12000.org> wrote: "Murray Eisenberg" wrote in message news:fdf236$20u$1@smc.vnet.net... &...

Sorry again, but your previous message said >=, not <=. It's still posted on Google Groups, and I checked to make sure. DrBob www.eclecticdreams.net -----Original Message----- From: AGUIRRE ESTIBALEZ Julian [mailto:mtpagesj@lg.ehu.es] Subject: RE: Re: Mandelbrot Set & Mathematica On Tue, 11 May 2004, DrBob wrote: > Sorry, but that just doesn't work, even after changing =BE to >=. There are > only two colors (even using your rainbow function), and no fractal > "antennae". As noted in a previous message, it should be "<=...

On 11/19/10 at 5:10 AM, edskulsky@gmail.com (David Skulsky) wrote: >While testing Mathematica 8 on some heritage code, I found a problem >which a colleague traced to a behavioral change in Times[]. >Specifically, the documentation for Times[] states that "0 x >evaluates to 0, but 0.0 x is left unchanged." This appears to be >true in Mathematica 7 but not in Mathematica 8 (at least not under >Mac OS X 10.6.4). >I have informed Wolfram about this change (bug?). I can confirm getting 0. as the result of doing 0.0 x in version 8 but getting 0.x as the...

Version 5.0 gives different answers with NIntegrate and Integrate. However, if you load the package Calculus`Integration, then both give the same answer. In[1]:= $Version Out[1]= 5.0 for Microsoft Windows (November 18, 2003) In[2]:= Integrate[Max[x,y],{x,0,1},{y,0,1}] Out[2]= \!\(1\/3\) In[3]:= NIntegrate[Max[x,y],{x,0,1},{y,0,1}] Out[3]= 0.666667 In[4]:= In[5]:= <<Calculus`Integration` In[6]:= Integrate[Max[x,y],{x,0,1},{y,0,1}] Out[6]= \!\(2\/3\) In[7]:= NIntegrate[Max[x,y],{x,0,1},{y,0,1}] Out[7]= 0.666667 Reagards! Jos� Luis -----Mensaje ori...

At 03:01 AM 3/30/2004, Matthias.Bode@oppenheim.de wrote: >Hello Steve, hello Marc, > >sorry, I wanted to be concise but was imprecise. > >1. I have music notes (a song) on paper (classical five line system). > >2. I identify (the key) the note(s) and pauses; e.g. "a" (= 440 Hz). (I can >calculate the frequency for each note.) > >3. How to input this information into Mathematica in order to make it *play* >the music? > >4. I do *not* want to write notes in classical notation on paper using >Mathematica. > >5. I used "...

I would also point out that you can simply copy and paste from your notebook into Word. So you can write your text in Word and produce formulae, graphs, diagrams, figures etc in word. This is what I do. I don't know how editable they are from Word but I have never had a problem > -----Original Message----- > From: bghiggins@ucdavis.edu [mailto:bghiggins@ucdavis.edu] > Subject: Re: mathematica to word > > > Why not simply make a PDF of your notebook. In pdf form, all > gentlesouls at your university can read it using Adobe Reader or > equivalent. Of...

On 12 Aug 2005, at 06:08, Alex wrote: > Kozlowski's posting is wrong from a to z. First, the square root of a > complex number has two branches. One is "positive" and the other is > "negative". So, if we cancel square root in the numerator and > denominator, the worst error we can make is in the sign. There is no > way to justify the fact that Mathematica was unable to do the > simplification. > As for the first sentence above I think I should leave it to others to make the judgement whether it applies to my posting more than to ...

Looking at the sum in more detail: s1[n_] := Sum[x^k*(Gamma[n-k-1/2]*Gamma[k+1/2])/ (Gamma[n-k-1]*Gamma[k+1]),{k,0,n-1}]; Calculating each term separately TableForm[t=Table[(Gamma[n-k-1/2]*Gamma[k+1/2])/(Gamma[n-k-1] *Gamma[k+1]), {n,5},{k,0,n-1}], TableHeadings->{Automatic,Table[i,{i,0,4}]}] Summing each row of the table Tr/@t {0, Pi/2, Pi, (3*Pi)/2, 2*Pi} For example, for n=2, the term for k=0 is ((Gamma[n-k-1/2]*Gamma[k+1/2])/(Gamma[n-k-1]*Gamma[k+1])/. {n->2,k->0}) == Gamma[3/2]*Gamma[1/2]/(Gamma[1]*Gamma[1])== (1/2)*Gamma[...

Dr. Bob, Presumably it has to do with whether intermediate results are effectively cached. Note that the order in which calls to Prime are made matters m=10000; r=Range[m]; rr=Reverse[r]; Timing[p=Prime[r];] {0.03 Second,Null} Timing[pr=Prime[rr];] {1.33 Second,Null} p == Reverse[pr] True Consequently, additional inefficiencies in the original algorithm are probably due to the sequencing of the calls to Prime. Here is the original algorithm (except Print) NumP=15000; Timing[For[k=1,k<NumP,k++, Gap[1]=Prime[k+1]-Prime[k]; Gap[2]=Prime[k+2]...

I like this idea. Does the mathematical/algebraic "programming" style scale up to large problems? Are there examples? Or perhaps it doesn't strictly scale, but is better applied judiciously. It could be used to steer a code at a very high level, or conversely, used in the gaps (the Mathematica-in-the-gaps argument). Conventional programming would make up the difference. If indeed mathematical programming is not the silver-bullet paradigm, where should the conventional (though modern) programming be done? Within or without Mathematica? If within, then we've c...

> I completely agree - can you remember who it was who wrote a > "Mathematica book generator" and posted it here - if you can, > I will add a link to it on my site, because that is all that > we seem to have for the foreseeable future! > > I think WRI's approach to documentation is a real mistake. > Newbies must find it almost impossible to get into the > software. Also, some of the new features of 6.0 - such as all > the new capabilities of Import and Export are almost buried > and unusable because of poor, vague, Microsoft-style document...

What an excellent and encouraging response! Here we have: 1) A skilled teacher who has given much thought on how to use Mathematica in an educational setting and has gained a lot of experience. 2) An institution that has given her serious support. 3) All the students have access to Mathematica all of the time. 4) The students learn Mathematica early in their college career so they will have easy use of it in their more advanced courses. I hope people flock to the University of Vermont to see how it's done. I'm sure there are others also and I hope we hear from some of the...

I'd like to add the ComplexAnalysis package at my web site below: This package contains complex analysis routines and complex graphics routines. There are routines that convert the regular 2D Graphics into equivalent complex forms. For example ComplexLine[{z1,z2,z3...}] takes complex numbers for the point coordinates. There are routines for producing one or two panel plots or animations of complex functions. Each panel may be one of the following plot types. 1) Cartesian/PolarSurface - Plots the surface s[f[z]] where f is a complex function and s is a real function. 2) Cartesian...

For some interesting reading take a look at Chapter 2 in Edward R. Tufte's 'Visual Explanations'. Dr. John Snow found the cause of the 1854 Cholera Epidemic in London by FIRST plotting the case data on a map of London, and THEN doing the analysis. In the case of the Challenger Space Shuttle disaster, although they were aware of the potential problem, the technicians never made the proper graphic that related risk to temperature in past launches and thus failed to present a convincing case for not launching. Maybe graphics doesn't always come before analysis, but ...

atul wrote: > I'm not entirely sure what prompts your anxiety, as I have used several > packages over the years, including Time Series, Wavelet Explorer and > Mathematica Link for Excel. While some functions (from both Time > Series and > Mathematica Link) were incorporated into the kernel over time, updates to > ensure compatibility with new versions of Mathematica were timely and > unobtrusive. > This has not been the case for me and I subscribe to "Premier Service". I must always ask (usually more than once) for updates to the "Mec...

On Thu, 14 Feb 2008 01:00:12 -0500 (EST), J=E1nos wrote: > > > On Feb 13, 2008, at 4:04 AM, David Park wrote: > >> But be aware that if you are buying a new computer, from Dell at >> least, and >> you specify a 64 bit microprocessor, you will not necessarily get a >> 64 bit >> operating system, and may not even be able to install a 64-bit >> operating >> system. So if you are looking to use 64-bit Mathematica check out very >> carefully before purchase that you will indeed have a 64-bit operating >> system. >>...

Hi David, Comments are interlaced in the text below, > -----Original Message----- > From: David Bailey [mailto:dave@Remove_Thisdbailey.co.uk] > Subject: Re: EUREKA Re: Types in Mathematica, a > practical example > > Hello, > > If you want to compute with undefined array elements, why not > use subscript elements such as Subscript[a,1,2]. Hmmm, maybe... Let's see ax := {{Subscript[ax, 1, 1], Subscript[ax, 1, 2]}, {Subscript[ax, 2, 1], Subscript[ax, 2, 2]}} is not a good idea, since evaluation of ax gives an infinite loop. (There are o...

The Principia states Newton's laws of motion , forming the foundation of classical mechanics , also Newton's law of universal gravitation , and ...

This was bugging me over the weekend: What is a good way to solve those Where's Waldo? [ 'Wally' outside of North America] puzzles, using Mathematica ...

During the Wolfram Mathematica Virtual Conference 2011, Wolfram founder Stephen Wolfram shared the background and vision of Mathematica, including ...

It would appear that Wolfram, the company behind the Siri search engine is bringing its original product, Mathematica , to the iPad. In response ...

Wolfram Research is giving away its Mathematica software for use on the diminutive, $25 Raspberry Pi computers and debuting a brand-new programming ...

The creator of the answer engine in Siri writes about his long relationship with Jobs Wolfram. Photo: Creative Commons There are a several novel ...

Single biggest jump in new functionality in the software's history

... is being expanded into a logic and knowledge engine that can operate locally or in the cloud. Wolfram Research's flagship program Mathematica ...

[Stephen Wolfram], possibly the only person on Earth who wants a second element named after him, is giving away Mathematica for the Raspberry ...

If you’re a fan of Wolfram’s Mathematica app, you’ll be pleased to hear its comprehensive tools for technical computing are now more accessible. ...

Resources last updated: 2/16/2016 12:51:19 PM