Seems caused by r1893,
"Use regular factorizers instead of custom ones"
Confirming.
diff --git a/src/algebra/multfact.spad b/src/algebra/multfact.spad
index 9bcfee4..d9d115a 100644
--- a/src/algebra/multfact.spad
+++ b/src/algebra/multfact.spad
@@ -475,10 +475,14 @@
factor(p)$MRationalFactorize(E, OV, Complex Integer, P)
R is Fraction Polynomial Integer and OV has convert : % -> Symbol =>
factor(p)$MPolyCatRationalFunctionFactorizer(E, OV, Integer, P)
- factor(p, factor$GenUFactorize(R))$InnerMultFact(OV, E, R, P)
+ R has PolynomialFactorizationExplicit =>
+ factor(p, factorPolynomial$R)$InnerMultFact(OV, E, R, P)
+ error "MULTFACT: factor unimplemented"
factor(up : USP) : Factored USP ==
- factor(up, factor$GenUFactorize(R))$InnerMultFact(OV, E, R, P)
+ R has PolynomialFactorizationExplicit =>
+ factor(up, factorPolynomial$R)$InnerMultFact(OV, E, R, P)
+ error "MULTFACT: factor unimplemented"
)abbrev package ALGMFACT AlgebraicMultFact
++ Author: P. Gianni
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