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We made a minor change to the function "soc"
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@@ -3,7 +3,7 @@ | |
newPackage( | ||
"VNumber", | ||
Version => "1.0", | ||
Date => "October 24, 2023", | ||
Date => "September 12, 2024", | ||
Authors => {{Name => "Antonino Ficarra", Email => "[email protected]", HomePage => "https://www.researchgate.net/profile/Antonino-Ficarra"}, | ||
{Name => "Emanuele Sgroi", Email => "[email protected]", HomePage => "https://www.researchgate.net/profile/Emanuele-Sgroi"}}, | ||
Headline => "compute v-number of homogeneous ideals and v-function of monomial ideals", | ||
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@@ -375,12 +375,12 @@ soc (Ideal, Ideal) := (I, P) -> ( | |
XP := ring I; | ||
if not(isMember(true, (stableMax(I)/(Q->P==Q)))) then XP = product(select(stablePrimes(I), Q -> (Q!=P and isSubset(P,Q)==true))); | ||
f := reesMap(I); | ||
R := source f/(sub(I, source f) + ker f); | ||
R := source f/ker f; | ||
IR := sub(I,R); | ||
PR := sub(P,R); | ||
QR := if not(XP===ring I) then sub(P + saturate XP, R) else ideal(1_R); | ||
QR := if not(XP===ring I) then sub(XP, R) else ideal(1_R); | ||
A := quotient(IR, PR); | ||
B := quotient(IR, QR); | ||
B := intersect(quotient(IR, PR), saturate(IR, QR)); | ||
A/B | ||
); | ||
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