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PropertyT.jl/scripts/SpNZ_has_T.jl

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2023-05-30 16:35:55 +02:00
using LinearAlgebra
using MKL_jll
BLAS.set_num_threads(4)
ENV["OMP_NUM_THREADS"] = 4
using Groups
import Groups.MatrixGroups
include(joinpath(@__DIR__, "../test/optimizers.jl"))
using PropertyT
using PropertyT.SymbolicWedderburn
using PropertyT.PermutationGroups
using PropertyT.StarAlgebras
include(joinpath(@__DIR__, "argparse.jl"))
include(joinpath(@__DIR__, "utils.jl"))
const N = parsed_args["N"]
const HALFRADIUS = parsed_args["halfradius"]
const UPPER_BOUND = parsed_args["upper_bound"]
const GENUS = 2N
G = MatrixGroups.SymplecticGroup{GENUS}(Int8)
@info "Running Δ² - λ·Δ sum of squares decomposition for " G
@info "computing group algebra structure"
RG, S, sizes = @time PropertyT.group_algebra(G, halfradius = HALFRADIUS)
@info "computing WedderburnDecomposition"
wd = let RG = RG, N = N
G = StarAlgebras.object(RG)
P = PermGroup(perm"(1,2)", Perm(circshift(1:N, -1)))
Σ = Groups.Constructions.WreathProduct(PermGroup(perm"(1,2)"), P)
act = PropertyT.action_by_conjugation(G, Σ)
wdfl = @time SymbolicWedderburn.WedderburnDecomposition(
Float64,
Σ,
act,
basis(RG),
StarAlgebras.Basis{UInt16}(@view basis(RG)[1:sizes[HALFRADIUS]]),
)
end
@info wd
Δ = RG(length(S)) - sum(RG(s) for s in S)
elt = Δ^2
unit = Δ
@info "defining optimization problem"
@time model, varP = PropertyT.sos_problem_primal(
elt,
unit,
wd;
upper_bound = UPPER_BOUND,
augmented = true,
show_progress = true,
)
solve_in_loop(
model,
wd,
varP;
logdir = "./log/Sp($N,Z)/r=$HALFRADIUS/Δ²-$(UPPER_BOUND)Δ",
optimizer = scs_optimizer(;
linear_solver = SCS.MKLDirectSolver,
eps = 1e-10,
max_iters = 50_000,
accel = 50,
alpha = 1.95,
),
data = (elt = elt, unit = unit, halfradius = HALFRADIUS),
)
if certified && λ > 0
Κ(λ, S) = round(sqrt(2λ / length(S)), Base.RoundDown; digits = 5)
@info "Certified result: $G has property (T):" N λ Κ(λ, S)
else
@info "Could NOT certify the result:" certified λ
end