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NAGtypes :: sortSolutions(List)

sortSolutions(List) -- sort the list of solutions

Synopsis

Description

The sorting is done lexicographically regarding each complex n-vector as real 2n-vector. The output format of track (missing documentation) and solveSystem (missing documentation) is respected.
For the corresponding coordinates a and b (of two real 2n-vectors) a < b if b-a is larger than Tolerance.

i1 : needsPackage "NumericalAlgebraicGeometry"

o1 = NumericalAlgebraicGeometry

o1 : Package
i2 : R = CC[x,y];
i3 : s = solveSystem {x^2+y^2-1, x*y}

o3 = {{1, -1.57772e-30+3.9443e-31*ii}, {-1, 1.57772e-30-3.45127e-31*ii},
     ------------------------------------------------------------------------
     {5.1276e-30+4.04291e-30*ii, 1}, {-5.1276e-30-4.04291e-30*ii, -1}}

o3 : List
i4 : sortSolutions s

o4 = {{-1, 1.57772e-30-3.45127e-31*ii}, {-5.1276e-30-4.04291e-30*ii, -1},
     ------------------------------------------------------------------------
     {5.1276e-30+4.04291e-30*ii, 1}, {1, -1.57772e-30+3.9443e-31*ii}}

o4 : List

See also