cleanF5_list := [-2.*x-4.*y-5.*x^2*y+2.*x*y-7.*x^3+x^2-2.*y^2+5.*y^3+2.*x^5*y-\ 8.*x^4*y^2+8.*x^4*y-12.*x^3*y^3+7.*x^3*y^2+13.*x^3*y-8.*x^2*y^4+28.*x^2*y^3-23\ .*x^2*y^2-16.*x*y^5+4.*x*y^4+30.*x*y^3+2.*x^6+6.*x^5-22.*x^4+20.*y^5+8.*y^4-16\ .*y^6+1., x-3.*y-21.*x^2*y+11.*x*y^2+5.*x*y+8.*x^3-7.*x^2+y^2+2.*y^3-1.*x^5*y-\ 13.*x^4*y^2-9.*x^4*y-17.*x^3*y^3+22.*x^3*y^2+16.*x^3*y-8.*x^2*y^4-39.*x^2*y^3-\ 26.*x^2*y^2+8.*x*y^5+6.*x*y^4+15.*x*y^3+4.*x^6+18.*x^5-9.*x^4+12.*y^5+21.*y^4+ 20.*y^6-1.]; noiseF5_list := [-.1669196846-.4279991913e-1*y-.1455197250*x^2-.3038794258*x*y ^2+.1155597816*y^3+.3509593370*x^3*y+.4023192397*y^4, -.1022470117*x-.12724072\ 57*y+.1795003094*x^2*y+.1499622838*x*y^2-.9088623263e-2*x*y+.1772281536*x^3-.\ 9997485589e-1*x^2-.2226712700*y^2-.1363293489*y^3-.2226712700*x^5*y-.\ 2726586978e-1*x^4*y^2+.1454179722*x^4*y+.2158548025*x^3*y^3-.1522344396*x^3*y^ 2-.6816467447e-1*x^3*y+.1635952187*x^2*y^4+.6362036285e-1*x^2*y^3+.1954054002* x^2*y^2-.1340571931*x*y^5+.1408736606*x*y^4+.9543054425e-1*x*y^3+.1522344396*x ^6-.1795003094*x^5-.1772281536*x^4+.8406976517e-1*y^5+.2272155816e-2*y^4+.2113\ 104908*y^6-.8634192100e-1]; gcd_F5 := 3;