mirror of
https://github.com/kalmarek/Groups.jl.git
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replace AutGroupElem with Automorphism{N} <: GWord{AutSymbol}
this allows to store in the Automorphism struct precomputed hash and image of the canonical basis
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@ -1,6 +1,6 @@
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###############################################################################
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###############################################################################
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#
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#
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# AutSymbol/ AutGroup / AutGroupElem
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# AutSymbol/ AutGroup / Automorphism
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#
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#
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###############################################################################
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###############################################################################
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@ -30,14 +30,23 @@ struct AutSymbol <: GSymbol
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typ::Union{LTransvect, RTransvect, PermAut, FlipAut, Identity}
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typ::Union{LTransvect, RTransvect, PermAut, FlipAut, Identity}
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end
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end
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AutGroupElem = GWord{AutSymbol}
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mutable struct AutGroup{N} <: AbstractFPGroup
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mutable struct AutGroup{N} <: AbstractFPGroup
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objectGroup::FreeGroup
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objectGroup::FreeGroup
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gens::Vector{AutSymbol}
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gens::Vector{AutSymbol}
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end
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end
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export AutGroupElem, AutGroup
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mutable struct Automorphism{N} <: GWord{AutSymbol}
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symbols::Vector{AutSymbol}
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modified::Bool
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savedhash::UInt
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savedimage::NTuple{N, FreeGroupElem}
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parent::AutGroup{N}
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Automorphism{N}(f::Vector{AutSymbol}) where N = new(f, true, UInt(0))
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end
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export Automorphism, AutGroup
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###############################################################################
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###############################################################################
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#
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#
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@ -45,9 +54,9 @@ export AutGroupElem, AutGroup
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#
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#
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###############################################################################
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###############################################################################
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elem_type(::AutGroup) = AutGroupElem
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elem_type(::AutGroup{N}) where N = Automorphism{N}
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parent_type(::AutGroupElem) = AutGroup
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parent_type(::Automorphism{N}) where N = AutGroup{N}
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###############################################################################
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###############################################################################
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#
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#
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@ -133,7 +142,7 @@ domain(G::AutGroup)= NTuple{length(G.objectGroup.gens), FreeGroupElem}(gens(G.ob
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###############################################################################
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###############################################################################
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#
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#
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# AutGroup / AutGroupElem constructors
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# AutGroup / Automorphism constructors
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#
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#
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###############################################################################
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###############################################################################
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@ -165,26 +174,26 @@ end
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#
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#
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###############################################################################
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###############################################################################
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function (G::AutGroup)()
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function (G::AutGroup{N})() where N
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id = AutGroupElem(id_autsymbol())
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id = Automorphism{N}(id_autsymbol())
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id.parent = G
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id.parent = G
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return id
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return id
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end
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end
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function (G::AutGroup)(f::AutSymbol)
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function (G::AutGroup{N})(f::AutSymbol) where N
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g = AutGroupElem(f)
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g = Automorphism{N}([f])
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g.parent = G
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g.parent = G
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return g
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return g
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end
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end
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function (G::AutGroup)(g::AutGroupElem)
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function (G::AutGroup{N})(g::Automorphism{N}) where N
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g.parent = G
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g.parent = G
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return g
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return g
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end
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end
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###############################################################################
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###############################################################################
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#
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#
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# Functional call overloads for evaluation of AutSymbol and AutGroupElem
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# Functional call overloads for evaluation of AutSymbol and Automorphism
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#
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#
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###############################################################################
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###############################################################################
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@ -197,7 +206,7 @@ function (f::AutSymbol)(v::NTuple{N, T}) where {N, T}
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return v
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return v
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end
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end
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function (F::AutGroupElem)(v::NTuple{N, T}) where {N, T}
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function (F::Automorphism{N})(v::NTuple{N, T}) where {N, T}
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for f in F.symbols
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for f in F.symbols
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v = f(v)::NTuple{N, T}
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v = f(v)::NTuple{N, T}
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end
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end
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@ -212,7 +221,7 @@ end
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hash(s::AutSymbol, h::UInt) = hash(s.str, hash(s.pow, hash(:AutSymbol, h)))
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hash(s::AutSymbol, h::UInt) = hash(s.str, hash(s.pow, hash(:AutSymbol, h)))
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function hash(g::AutGroupElem, h::UInt)
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function hash(g::Automorphism, h::UInt)
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if g.modified
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if g.modified
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g.savedhash = hash(g(domain(parent(g))), hash(typeof(g), hash(parent(g), h)))
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g.savedhash = hash(g(domain(parent(g))), hash(typeof(g), hash(parent(g), h)))
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g.modified = false
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g.modified = false
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@ -262,7 +271,7 @@ end
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(==)(s::AutSymbol, t::AutSymbol) = s.str == t.str && s.pow == t.pow
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(==)(s::AutSymbol, t::AutSymbol) = s.str == t.str && s.pow == t.pow
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function (==)(g::AutGroupElem, h::AutGroupElem)
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function (==)(g::Automorphism, h::Automorphism)
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parent(g) == parent(h) || return false
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parent(g) == parent(h) || return false
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return g(domain(parent(g))) == h(domain(parent(h)))
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return g(domain(parent(g))) == h(domain(parent(h)))
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end
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end
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@ -292,7 +301,7 @@ function getperm(s::AutSymbol)
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return s.typ.p
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return s.typ.p
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end
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end
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function simplify_perms!(W::AutGroupElem)
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function simplify_perms!(W::Automorphism)
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reduced = true
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reduced = true
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for i in 1:length(W.symbols) - 1
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for i in 1:length(W.symbols) - 1
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current = W.symbols[i]
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current = W.symbols[i]
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@ -318,7 +327,7 @@ function simplify_perms!(W::AutGroupElem)
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return reduced
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return reduced
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end
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end
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function reduce!(W::AutGroupElem)
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function reduce!(W::Automorphism)
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if length(W) < 2
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if length(W) < 2
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deleteat!(W.symbols, find(x -> x.pow == 0, W.symbols))
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deleteat!(W.symbols, find(x -> x.pow == 0, W.symbols))
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else
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else
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