CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutSign UpSign In

Real-time collaboration for Jupyter Notebooks, Linux Terminals, LaTeX, VS Code, R IDE, and more,
all in one place.

| Download

GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it

Views: 418346
Tweet
Share
Share
#############################################################################
##
#W  rat-def.gd                         Manuel Delgado <[email protected]>
#W                                    Jose Morais    <[email protected]>
##
##
#H  @(#)$Id: rat-def.gd,v 1.13 $
##
#Y  Copyright (C)  2004,  CMUP, Universidade do Porto, Portugal
##
##
##          Rational Expressions
######################################################################
DeclareCategory( "IsRatExpOnnLettersObj", IsObject );
DeclareCategoryCollections( "IsRatExpOnnLettersObj" );

DeclareGlobalFunction( "RatExpOnnLettersObj" );
DeclareGlobalFunction( "RatExpOnnLetters" );


############################################################################
##
#F IsRationalExpression(R)
##
DeclareGlobalFunction( "IsRationalExpression" );

############################################################################
##
#F RatExpToString(R)
##
DeclareGlobalFunction( "RatExpToString" );


#############################################################################
##
#F  RationalExpression(I, S)
##
##  Given the number of alphabet symbols (I) and a string (S) returns
##  the rational expression represented by S
##
DeclareGlobalFunction( "RationalExpression" );

#############################################################################
##
#F  RandomRatExp(arg)
##
##  Given the number of symbols of the alphabet and (possibly) a factor m,
##  returns a pseudo random rational expression over that alphabet.
##
DeclareGlobalFunction( "RandomRatExp" );

#############################################################################
##
#A SizeRatExp(A)
##
## returns the size of the rational expression
##
DeclareAttribute("SizeRatExp", IsRatExpOnnLettersObj);


#############################################################################
##
#A AlphabetOfRatExp(A)
##
## returns the number of symbols in the alphabet of the rational expression
##
DeclareGlobalFunction("AlphabetOfRatExp");

#############################################################################
##
#F  AlphabetOfRatExpAsList(R)
##
##  Returns the alphabet of the rational expression as a list.
##  If the alphabet of the rational expression is given by means of an integer
##  less than 27 it returns the list "abcd....",
##  otherwise returns [ "a1", "a2", "a3", "a4", ... ].
##
DeclareGlobalFunction("AlphabetOfRatExpAsList");



#E