coefficientRing(SchurRing) -- Coefficient ring of a Schur ring

• Function: coefficientRing

• Usage:

  coefficientRing S

• Inputs:
  • S, a Schur ring,
• Outputs:
  • a ring

i1 : S = schurRing(ZZ[x],s,4);

i2 : coefficientRing S

o2 = ZZ[x]

o2 : PolynomialRing

i3 : A = schurRing(QQ,a,3);

i4 : B = schurRing(A,b,2);

i5 : coefficientRing B

o5 = A

o5 : SchurRing