degreeSequence -- the (multi)-degree sequence of a (multi)-rational map

Synopsis

• Usage:

  degreeSequence Phi

• Inputs:
  • Phi, a multi-rational map
• Outputs:
  • a list, the list of the degree sequences for the rational maps returned by factor Phi.

Description

i1 : Phi = inverse first graph last graph rationalMap PP_(ZZ/33331)^(1,3);

o1 : MultirationalMap (birational map from threefold in PP^3 x PP^2 to threefold in PP^3 x PP^2 x PP^2)

i2 : degreeSequence Phi

o2 = {[(1, 0)], [(0, 1), (2, 0)], [(0, 1), (2, 0)]}

o2 : List

References

See also

• factor(MultirationalMap) -- the list of rational maps defining a multi-rational map