Slug #1105
Updated by John Abbott over 6 years ago
Here are some cases where @PrimaryDecomposition0@ in CoCoA-5.2.2 is slow:
<pre>
time 6.9682 ideal(7*x*y^4 +9*x*y^3*z +4*z^5, -6*x^5 +y^5 +4*x*y*z^2, 4*x^2*y^2*z -3*y^3*z^2 -2*x*z^4); -2*x*z^4)
time 6.8479 ideal(-4*x^5 -5*y^5 -2*y*z, -6*x*y^4 -6*x*z^4 +7*x^2, -9*x^3*z^2 -7*x*y*z^3 -9*z^4)
</pre>
PS I have ignored examples needing less than 5s on my computer.
<pre>
time 6.9682 ideal(7*x*y^4 +9*x*y^3*z +4*z^5, -6*x^5 +y^5 +4*x*y*z^2, 4*x^2*y^2*z -3*y^3*z^2 -2*x*z^4); -2*x*z^4)
time 6.8479 ideal(-4*x^5 -5*y^5 -2*y*z, -6*x*y^4 -6*x*z^4 +7*x^2, -9*x^3*z^2 -7*x*y*z^3 -9*z^4)
</pre>
PS I have ignored examples needing less than 5s on my computer.