Changeset 437f97 in git


Ignore:
Timestamp:
May 8, 2006, 4:43:21 PM (18 years ago)
Author:
Viktor Levandovskyy <levandov@…>
Branches:
(u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')
Children:
94d338aa149a7a6fa6d2930a62d22a4fd281c84b
Parents:
ff4c61b0d0fe25c31754910a1f80242d7086075f
Message:
*levandov: cosmetic changes to names and descroption


git-svn-id: file:///usr/local/Singular/svn/trunk@9113 2c84dea3-7e68-4137-9b89-c4e89433aadc
File:
1 edited

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  • Singular/LIB/dmod.lib

    rff4c61b r437f97  
    11///////////////////////////////////////////////////////////////////////////////
    2 version="$Id: dmod.lib,v 1.2 2006-04-24 16:00:14 levandov Exp $";
     2version="$Id: dmod.lib,v 1.3 2006-05-08 14:43:21 levandov Exp $";
    33category="Noncommutative";
    44info="
     
    99THEORY: Given a polynomial ring R = K[x_1,...,x_n] and a polynomial F in R, one is interested in the ring R[1/F^s] for a natural number s.
    1010@* In fact, the ring R[1/F^s] has a structure of a D(R)-module, where D(R) is a Weyl algebra K<x_1,...,x_n,d_1,...,d_n | d_j x_j = x_j d_j +1>.
    11 @* Constructively, one needs to find an ideal I = I(F^s) in D(R), such
     11@* Constructively, one needs to find a left ideal I = I(F^s) in D(R), such
    1212that K[x_1,...,x_n,1/F^s] is isomorphic to D(R)/I as a D(R)-module.
    1313@* We provide two implementations:
    1414@* 1) the classical Ann F^s algorithm from Oaku and Takayama (J. Pure Applied Math., 1999) and
    15 @* 2) the newer Ann F^s algorithm by Brianson and Maisonobe.
     15@* 2) the newer Ann F^s algorithm by Briancon and Maisonobe.
    1616
    1717PROCEDURES:
    1818annfsOT(F[,eng]);    compute Ann F^s for a poly F with the algorithm of Oaku-Takayama
    19 annfsBM(F[,eng]);    compute Ann F^s for a poly F with the algorithm of Brianson-Maisonobe
     19annfsBM(F[,eng]);    compute Ann F^s for a poly F with the algorithm of Briancon-Maisonobe
    2020reiffen(p,q);      create the polynomial, describing a Reiffen curve
    2121arrange(p);        create the polynomial, describing a generic hyperplane arrangement
     
    5555"USAGE:  annfsBM(f [,eng]);  f a poly, eng an optional int
    5656RETURN:  ring
    57 PURPOSE: compute the D-module structure of basering[f^s]
     57PURPOSE: compute the D-module structure of basering[f^s], according
     58to the algorithm by Briancon and Maisonobe
    5859NOTE:    activate this ring with the @code{setring} command. In this ring,
    5960@*       - the ideal LD is the needed D-mod structure,
     
    331332"USAGE:  annfsOT(f [,eng]);  f a poly, eng an optional int
    332333RETURN:  ring
    333 PURPOSE: compute the D-module structure of basering[f^s]
     334PURPOSE: compute the D-module structure of basering[f^s], according
     335to the algorithm by Oaku and Takayama
    334336NOTE:    activate this ring with the @code{setring} command. In this ring,
    335337@*       - the ideal LD is the needed D-mod structure,
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