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move OrbitSelector to orbit_selector outside of function

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to avoid potential closure
This commit is contained in:
kalmarek 2018-07-31 09:48:24 +02:00
parent f5afcf4dfb
commit 16dc0c7591
1 changed files with 8 additions and 8 deletions
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16
src/Projections.jl
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@ -102,6 +102,7 @@ function idempotents(RG::GroupRing{Generic.PermGroup{S}}, T::Type=Rational{Int})
end end
idems = Vector{GroupRingElem{T}}() idems = Vector{GroupRingElem{T}}()
for p in projs for p in projs
append!(idems, [RG(p, T), RG(p, T, alt=true)]) append!(idems, [RG(p, T), RG(p, T, alt=true)])
end end
@ -151,6 +152,11 @@ function rankOne_projections(G::Generic.PermGroup, T::Type=Rational{Int})
return min_projs return min_projs
end end
function orbit_selector(n::Integer, k::Integer,
chi::AbstractCharacter, psi::AbstractCharacter)
return Projections.DirectProdCharacter(ntuple(i -> (i <= k ? chi : psi), n))
end
function rankOne_projections(Bn::WreathProduct, T::Type=Rational{Int}) function rankOne_projections(Bn::WreathProduct, T::Type=Rational{Int})
N = Bn.P.n N = Bn.P.n
@ -161,15 +167,9 @@ function rankOne_projections(Bn::WreathProduct, T::Type=Rational{Int})
RBn = GroupRing(Bn) RBn = GroupRing(Bn)
RN = GroupRing(Bn.N) RN = GroupRing(Bn.N)
# Bn.N = (Z/2Z)ⁿ characters corresponding to the first k coordinates:
function OrbitSelector(n::Integer, k::Integer,
chi::Projections.AbstractCharacter, psi::Projections.AbstractCharacter)
return Projections.DirectProdCharacter(ntuple(i -> (i <= k ? chi : psi), n))
end
sign, id = collect(characters(Bn.N.group)) sign, id = collect(characters(Bn.N.group))
BnN_orbits = Dict(i => OrbitSelector(N, i, sign, id) for i in 0:N) # Bn.N = (Z/2Z)ⁿ characters corresponding to the first k coordinates:
BnN_orbits = Dict(i => orbit_selector(N, i, sign, id) for i in 0:N)
Q = Dict(i => RBn(central_projection(RN, BnN_orbits[i], T), g -> Bn(g)) for i in 0:N) Q = Dict(i => RBn(central_projection(RN, BnN_orbits[i], T), g -> Bn(g)) for i in 0:N)