ApCoCoA-1:Bertini.BPMCSolve
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Revision as of 12:03, 1 July 2009 by 132.231.54.1 (talk)
Bertini.BPMCSolve
Memnership testing for Positive dimensional Homogeneous or Non-Homogeneous polynomial system with Default and User Configurations.
Syntax
Bertini.BPMCSolve(M:LIST, SysTyp:STRING , MPoints:LIST, ConfigSet:LIST)
Description
Please note:
(1) The function(s) explained on this page is/are using the ApCoCoAServer. You will have to start the ApCoCoAServer in order to use it/them.
(2) You need to write(or generate by using the function ) the witness date file and save it with the name "witness_data" in Bertini directory (.../ApCoCoA-1.2/Bertini/).
@param M: List of polynomials in the system.
@param SysTyp: Type of polynomials in the system. Homogeneous (hom) or nonhomogeneous (Nhom).
@param MPoints: List of lists containg member points.
@param ConfigSet: List of strings representing Configurations to be used by bertini. For detials about configuraion settings see Bertini mannul http://www.nd.edu/~sommese/bertini/BertiniUsersManual.pdf.
Example
-- Membership testing.
-- We want to test membership for the points [[[1.0, 0.0],[0.0, 0.0],[0.0, 0.0 ]],[[1.3650269, -0.31430820],[1.7645087, -0.85807828],[2.1389007, -1.7258994]]], where the polynomial system is x^2+y^2+z^2-1=0, x^3+y^2+z^3-1=0, (y-x^2)*(z-x^3)(z-5)=0.
Use S ::= QQ[x,y,z]; -- Define appropriate ring
M := [x^2+y^2+z^2-1,x^3+y^2+z^3-1,(y-x^2)*(z-x^3)(z-5)];
SysTyp := <quotes>Nhom</quotes>;
MPoints :=[[["1.0", "0.0"],["0.0", "0.0"],["0.0", "0.0" ]],[["1.3650269", "-0.31430820"],
["1.7645087", "-0.85807828"],["2.1389007", "-1.7258994"]]];
ConfigSet := ["TRACKTYPE: 3"];
-- Then we compute the solution with
$Bertini.BPMCSolve(M,SysTyp,MPoints,ConfigSet);
-- And we achieve a list of lists containing witness point supersets:
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See also
