Describe the bugnormal_form sometimes throws this error
ERROR: UndefRefError: access to undefined reference
Stacktrace:
[1] getproperty
@ ./Base.jl:37 [inlined]
[2] _normal_form_f4(A::Vector{FqMPolyRingElem}, J::MPolyIdeal{FqMPolyRingElem})
@ Oscar ~/.julia/packages/Oscar/fx6DP/src/Rings/groebner.jl:1045
[3] normal_form(A::Vector{FqMPolyRingElem}, J::MPolyIdeal{FqMPolyRingElem}; ordering::MonomialOrdering{FqMPolyRing})
@ Oscar ~/.julia/packages/Oscar/fx6DP/src/Rings/groebner.jl:995
[4] normal_form
@ ~/.julia/packages/Oscar/fx6DP/src/Rings/groebner.jl:992 [inlined]
[5] normal_form(f::FqMPolyRingElem, J::MPolyIdeal{FqMPolyRingElem}; ordering::MonomialOrdering{FqMPolyRing})
@ Oscar ~/.julia/packages/Oscar/fx6DP/src/Rings/groebner.jl:987
[6] normal_form(f::FqMPolyRingElem, J::MPolyIdeal{FqMPolyRingElem})
@ Oscar ~/.julia/packages/Oscar/fx6DP/src/Rings/groebner.jl:986
[7] top-level scope
@ Untitled-2:10
It only seems to happen when groebner_basis has been called explicitly before, but it doesn't happen for the example in the documentation. This seems to be related to #1481.
To Reproduce
using Oscar
K = GF(30097)
R, (x, y) = polynomial_ring(K, ["x", "y"])
F = [x^2 + y^2 - 7, x^3 - 5 * x + 1 - y]
J = ideal(R, F)
G = groebner_basis(J) # Comment out to avoid error.
normal_form(y^4, J)
Expected behavior
To not throw and return x*y + 30096*x + 9*y^2 + 30083.
System:
I tested also on 1.1.0-DEV with the same behavior.
julia> Oscar.versioninfo(full=true)
OSCAR version 1.0.0
combining:
AbstractAlgebra.jl v0.40.2
GAP.jl v0.10.3
Hecke.jl v0.30.2
Nemo.jl v0.43.1
Polymake.jl v0.11.15
Singular.jl v0.22.4
building on:
Antic_jll v0.201.500+0
Arb_jll v200.2300.0+0
Calcium_jll v0.401.100+0
FLINT_jll v200.900.9+0
GAP_jll v400.1200.200+9
Singular_jll v403.214.1400+0
libpolymake_julia_jll v0.11.4+0
libsingular_julia_jll v0.43.0+0
polymake_jll v400.1100.1+0
See `]st -m` for a full list of dependencies.
Julia Version 1.10.2
Commit bd47eca2c8a (2024-03-01 10:14 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: Linux (x86_64-linux-gnu)
CPU: 16 × AMD Ryzen 7 5825U with Radeon Graphics
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-15.0.7 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 16 virtual cores)
Environment:
JULIA_EDITOR = code
JULIA_NUM_THREADS =
Official https://julialang.org/ release
Describe the bug
normal_form
sometimes throws this errorIt only seems to happen when
groebner_basis
has been called explicitly before, but it doesn't happen for the example in the documentation. This seems to be related to #1481.To Reproduce
Expected behavior To not throw and return
x*y + 30096*x + 9*y^2 + 30083
.System: I tested also on 1.1.0-DEV with the same behavior.