Changeset b9b906 in git for Singular/LIB/zeroset.lib
- Timestamp:
- Jan 16, 2001, 2:48:47 PM (23 years ago)
- Branches:
- (u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')
- Children:
- 081d28e7da33af82545a27eb9f8ee82b0884b9f0
- Parents:
- 4e3468f1f6473297e317588e34a7719e241780f9
- File:
-
- 1 edited
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Singular/LIB/zeroset.lib
r4e3468 rb9b906 2 2 /////////////////////////////////////////////////////////////////////////////// 3 3 4 version="$Id: zeroset.lib,v 1. 5 2000-12-22 15:59:36 greuelExp $";4 version="$Id: zeroset.lib,v 1.6 2001-01-16 13:48:47 Singular Exp $"; 5 5 category="Symbolic-numerical solving"; 6 6 info=" … … 10 10 Current Adress: Institut fuer Informatik, TU Muenchen 11 11 12 OVERVIEW: 12 OVERVIEW: 13 13 Algorithms for finding the zero-set of a zero-dim. ideal in Q(a)[x_1,..x_n], 14 14 Roots and Factorization of univariate polynomials over Q(a)[t] 15 where a is an algebric number. Written in the frame of the 16 diploma thesis (advisor: Prof. Gert-Martin Greuel) 'Computations of moduli 15 where a is an algebric number. Written in the frame of the 16 diploma thesis (advisor: Prof. Gert-Martin Greuel) 'Computations of moduli 17 17 spaces of semiquasihomogenous singularities and an implementation in Singular' 18 18 This library is meant as a preliminary extension of the functionality … … 169 169 RETURN: list, all entries are polynomials 170 170 _[1] = roots of f, each entry is a polynomial 171 _[2] = 'newA' - if the groundfield is Q(a') and the extension field 171 _[2] = 'newA' - if the groundfield is Q(a') and the extension field 172 172 is Q(a), then 'newA' is the representation of a' in Q(a) 173 173 _[3] = minpoly of the algebraic extension of the groundfield … … 321 321 OPTIONS: opt = 0 no primary decomposition (default) 322 322 opt > 0 primary decomposition 323 NOTE: If I contains an algebraic number (parameter) then 'I' must be 323 NOTE: If I contains an algebraic number (parameter) then 'I' must be 324 324 transformed w.r.t. 'newA' in the new ring. 325 325 EXAMPLE: example ZeroSet; shows an example … … 708 708 _[2] = g (= f(x - s*a)) (poly) 709 709 _[3] = s (int) 710 ASSUME: f must be squarefree, basering = Q[x,a] and ideal 'mpoly' is equal to 710 ASSUME: f must be squarefree, basering = Q[x,a] and ideal 'mpoly' is equal to 711 711 'minpoly',this represents the ring Q(a)[x] together with 'minpoly'. 712 712 NOTE: the norm is an element of Q[x] … … 757 757 _[1] = factors (monic), first entry is the leading coefficient 758 758 _[2] = multiplicities (not yet) 759 ASSUME: basering must be the univariate polynomial ring over a field which 759 ASSUME: basering must be the univariate polynomial ring over a field which 760 760 is Q or a simple extension of Q given by a minpoly. 761 761 NOTE: if basering = Q[t] then this is the built-in 'factorize'.
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