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baseFractionField -- extracts the fraction field of the base polynomial ring of a Weyl algebra

Description

Several functions in this package return an object over the fraction field of the base polynomial ring of a Weyl algebra. This function extracts that ring.

i1 : D = makeWA(frac(QQ[e])[a,b,c, DegreeRank => 0][x,y]);
i2 : baseFractionField D

o2 = frac(QQ[x..y, a..c, e])

o2 : FractionField
i3 : gens oo

o3 = {x, y, a, b, c, e}

o3 : List

Ways to use baseFractionField:

  • baseFractionField(FractionField)
  • baseFractionField(PolynomialRing)

For the programmer

The object baseFractionField is a method function.


The source of this document is in ConnectionMatrices/docs.m2:120:0.