Edit detail for SandBox revision 105 of 233

This is the front page of the SandBox?. You can try anything you like here but keep in mind that other people are also using these pages to learn and experiment with Axiom and Reduce. Please be courteous to others if you correct mistakes and try to explain what you are doing.

No Email Notices

Normally, if you edit any page on MathAction? and click Save or if you add a comment to a page, a notice of the change is sent out to all subscribers on the axiom-developer email list, see the [Axiom Community]?. Separate notices are also sent to those users who subscribe directly to MathAction?.

Use Preview

If you click Preview instead of Save, you will get a chance to see the result of your calculations and LaTeX? commands but no email notice is sent out and the result is not saved until you decide to click Save or not.

Use the SandBox

On this page or on any other page with a name beginning with SandBox? such as SandBoxJohn2?, SandBoxSimple?, SandBoxEtc?, clicking Save only sends email notices to users who subscribe directly to that specific SandBox? page. Saving and adding comments does not create an email to the email list. You can safely use these pages for testing without disturbing anyone who might not care to know about your experiments.

New SandBox Pages

You can also create new SandBox? pages as needed just by editing this page and adding a link to the list of new page below. The link must include at least two uppercase letters and no spaces or alternatively it can be any phrase written inside [ ] brackets as long as it begins with SandBox?. When you Save this page, the link to the new page will appear with a blue question mark ? beside it. Clicking on the blue question mark ? will ask you if you wish to create a new page.

[SandBox Aldor Category Theory]?

based on "Prospects for Category Theory in Aldor" by Saul Youssef, 2004 http://atlas.bu.edu/~youssef/papers/math/aldor/aldor.pdf

[SandBox Aldor Foreign]?

Using Aldor to call external C routines

[SandBox Aldor Generator]?

Aldor defines a generator for type Vector

[SandBox Aldor Join and Meet]?

Aldor has category constructor named Meet which appears to be analogous to (but opposite of) Join.

[SandBox Aldor Semantics]?

exports and constants

[SandBox Aldor Sieve]?

A prime number sieve in Aldor to count primes <= n.

[SandBox Aldor Testing]?

Using Aldor to write Axiom library routines

[SandBox Arrays]?

How fast is array access in Axiom?

[SandBox Axiom Syntax]?

Syntax of if then else

[SandBox Boolean]?

evaluating Boolean expressions and conditions

[SandBox Cast]?

Meaning and use of pretend vs. strong typing

[SandBox Categorical Relativity]?

Special relativity without the Lorentz group

[SandBox Category of Graphs]?

Graph theory in Axiom

[SandBoxCL-WEB]?

Tangle operation for literate programming implemented in Common Lisp

[SandBox Combinat]?

A{ld,xi}o{r,m}Combinat

[SandBox Content MathML]?

Content vs. presentation MathML?

SandBoxCS224?

[SandBox Direct Product]?

A x B

[SandBox DistributedExpression]?

expression in sum-of-products form

[SandBox Domains and Types]?

What is the difference?

[SandboxTypeDefinitions]?

What does the type means for you?

[AxiomEmacsMode]?

Beginnings of an Emacs mode for Axiom based off of Jay's work and others

[SandBox Embeded PDF]?

pdf format documents can be displayed inline

[SandBox EndPaper]?

Algebra and Data Structure Hierarchy (lattice) diagrams

[SandBox Folding]?

experiments with DHTML, javascript, etc.

[SandBox Functional Addition]?

"adding" two functions

[SandBox Functions]?

How do they work?

[SandBox Functors]?

What are they? In Axiom functors are also called domain constructors.

[SandBox Gamma]?

Numerical evaluation of the incomplete Gamma function

[SandBox GuessingSequence]?

Guessing integer sequences

[SandBox Integration]?

Examples of integration in Axiom and Reduce

[SandBox Kernel]?

What is a "kernel"?

[SandBox kaveh]?

[SandBox LaTeX]?

LaTeX? commands allowed in MathAction?

[SandBox Lisp]?

Using Lisp in Axiom

[SandBox Manip]?

expression manipulations

[SandBox Manipulating Domains]?

testing the domain of an expression

[SandBox Mapping]?

A->B is a type in Axiom

[MathMLFormat]?

[SandBox Matrix]?

Examples of working with matrices in Axiom

[SandBox Maxima]?

Testing the Maxima interface

[SandBox Monoid]?

Rings and things

[SandBox Monoid Extend]?

Martin Rubey's beautiful idea about using extend to add a category to a previously defined domain.

[SandBox Noncommutative Polynomials]?

XPOLY and friends

[SandBox Numerical Integration]?

Simpson method

[SandBox NNI]?

NonNegative? Integer without using SubDomain?

[SandBox Pamphlet]?

[Literate Programming]? support on MathAction?

[SandBoxPartialFraction]?

Trigonometric expansion example

SandBoxPfaffian?

Computing the Pfaffian of a square matrix

[SandBox Polymake]?

an interface between Axiom and PolyMake?

[SandBox Polynomials]?

Axiom's polynomial domains are certainly rich and complex!

[SandBox ProblemSolving]?

Test page for educational purposes

[SandBox Qubic]?

Solving cubic polynomials

[SandBox Reduce And MathML]?

Reduce can use MathML? for both input and output

[SandBox Reflection in Aldor]?

a reflection framework

[SandBoxRelativeVelocity]?

Slides for IARD 2006: Addition of Relative Velocites is Associative

[SandBox Sage]?

This is a test of Sage in MathAction?

[SandBox Shortcoming]?

Implementation of solve

[SandBox Solve]?

Solving equations

[SandBox Statistics]?

calculating statistics in Axiom

[SandBox SubDomain]?

What is a SubDomain??

[SandBox Tail Recursion]?

When does Axiom replace recursion with iteration?

[SandBox Text Files]?

How to access text files in Axiom

[SandBox Trace Analysed]?

Tracing can affect output of 1::EXPR INT or 1::FRAC INT

[SandBox Units and Dimensions]?

Scientific units and dimensions

[SandBox Spad]?

Domain construction

[SandBox Speed]?

Compilation speed

[SandBox Zero]?

[SandBox Axiom Strengths]?

SandBoxJohn2?

Experiments with matrices and various other stuff

SandBox2?

Experiments

SandBox3?

Experiments

SandBoxSymbolicInverseTrig?

Experiments

SandBoxGraphviz?

Experiments with GraphViz? and StructuredTables?

SandBoxDifferentialEquations?

Differential Equations etc.

[SandBoxMatrixExample]?

[SandBoxRotationMatrix]?

Here you can create your own SandBox?.

[SandBox9]?

Experiments with JET Bundles

[SandBoxGnuDraw]?

Miscellaneous

[SandBox11]?

Miscellaneous

[[SandBox12TestIndetAndComplex]]?

[SandBox13]?

Solving some nonlinear differential equations

[SandBox42]?

Miscellaneous

[SandBox DoOps]?

used to run Axiom without actually have to have it installed!

[SandBoxKMG]?

[SandBoxDGE]?

[SandBoxMLE]?

Maximum likelihood estimation (statistics)

[SandBoxFisher]?

Fisher's exact test for 2x2 tables (statistics)

[SandBoxNewtonsMethod]?

Newton's method for numerically solving f(x)=0 (with examples of calling Axiom expressions and Spad functions from Lisp).

[SandBoxVeryLongLaTeX]?

Test long lines

[SandBox Complementsdalgebrelineaire]?

Francois Maltey

[SandBoxFriCAS]?

page for testing friCAS

[SandBoxEcfact]?

Aldor compiler problem?

[SandBoxMyReduce]?

calling reduce with empty list

[SandBoxCategoryTerms]?

Category theory terminology used in SPAD

Click on the ? to create a new page. You should also edit this page to include a description and a new empty link for the next person.

Examples

Here is a simple Axiom command:

    \begin{axiom}
    integrate(1/(a+z^3), z=0..1,"noPole")
    \end{axiom}

integrate(1/(a+z^3), z=0..1,"noPole")

(1)

And here is a REDUCE command:

  \begin{reduce}
  load_package sfgamma;
  load_package defint;
  int(1/(a+z^3), z,0,1);
  \end{reduce}

load_package sfgamma;

load_package defint;

*** gamma declared operator 

int(1/(a+z^3), z,0,1);

Common Mistakes

Please review the list of [Common Mistakes]? and the list of [MathAction Problems]? if you are have never used MathAction? before. If you are learning to use Axiom and think that someone must have solved some particular problem before you, check this list of Common [Axiom Problems]?.

solve(a*x+b,x)

(2)

integrate(sin x, x)

(3)

in response to an exchange of emails with Gabriel Dos Reis concerning the validity of automatic translations of x >= y into not x < y, etc.

)abbrev package REFL Reflect
Reflect(T:Type): with
    constructor? : Symbol -> Boolean
  == add
    constructor?(p:Symbol):Boolean == car(devaluate(T)$Lisp)$SExpression = convert(p)$SExpression

   Compiling FriCAS source code from file 
      /var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/2684009892188271010-25px004.spad
      using old system compiler.
   REFL abbreviates package Reflect 
------------------------------------------------------------------------
   initializing NRLIB REFL for Reflect 
   compiling into NRLIB REFL 
   compiling exported constructor? : Symbol -> Boolean
Time: 0 SEC.

(time taken in buildFunctor:  0)

;;;     ***       |Reflect| REDEFINED

;;;     ***       |Reflect| REDEFINED
Time: 0 SEC.

   Cumulative Statistics for Constructor Reflect
      Time: 0 seconds

   finalizing NRLIB REFL 
   Processing Reflect for Browser database:
--->-->Reflect(constructor): Not documented!!!!
--->-->Reflect((constructor? ((Boolean) (Symbol)))): Not documented!!!!
--->-->Reflect(): Missing Description
; compiling file "/var/aw/var/LatexWiki/REFL.NRLIB/REFL.lsp" (written 05 APR 2013 06:33:07 AM):

; /var/aw/var/LatexWiki/REFL.NRLIB/REFL.fasl written
; compilation finished in 0:00:00.012
------------------------------------------------------------------------
   Reflect is now explicitly exposed in frame initial 
   Reflect will be automatically loaded when needed from 
      /var/aw/var/LatexWiki/REFL.NRLIB/REFL

T1:=Integer

(4)

T2:=Polynomial Fraction T1

(5)

T3:=Complex T2

(6)

constructor?('Polynomial)$Reflect(T1)

(7)

constructor?('Polynomial)$Reflect(T2)

(8)

constructor?('Polynomial)$Reflect(T3)

(9)

constructor?('Complex)$Reflect(T3)

(10)

This domain implements the free product of monoids (or groups) It is the coproduct in the category of monoids (groups). FreeProduct(A,B) is the monoid (group) whose elements are the reduced words in A and B, under the operation of concatenation followed by reduction:

• Remove identity elements (of either A or B)
• Replace a1a2 by its product in A and b1b2 by its product in B

Ref: http://en.wikipedia.org/wiki/Free_product

Sandbox with some simple Algebra [SimplifyingAlgebraicExpressions]?