kalmar/Groups.jl
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make WreathProduct{Elem} concrete & immutable

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parametrize by WreathProduct{Elem} by T<:Group{Elem}
This commit is contained in:
kalmar 2017-07-21 13:33:40 +02:00
parent 125e4a5263
commit fa996d68fb
1 changed files with 9 additions and 10 deletions
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19
src/WreathProducts.jl
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@ -18,24 +18,23 @@ doc"""
* `::Group` : the single factor of group N
* `::PermutationGroup` : full PermutationGroup
"""
immutable WreathProduct{T<:Group} <: Group
N::DirectProductGroup{T}
P::PermGroup
type WreathProduct <: Group
N::DirectProductGroup
P::PermutationGroup
function WreathProduct(G::Group, P::PermutationGroup)
N = DirectProductGroup(typeof(G)[G for _ in 1:P.n])
function WreathProduct(G::Group, P::PermGroup)
N = DirectProductGroup(G, P.n)
return new(N, P)
end
end
type WreathProductElem <: GroupElem
n::DirectProductGroupElem
immutable WreathProductElem{T<:GroupElem} <: GroupElem
n::DirectProductGroupElem{T}
p::perm
parent::WreathProduct
# parent::WreathProduct
function WreathProductElem(n::DirectProductGroupElem, p::perm)
length(n.elts) == parent(p).n
length(n.elts) == parent(p).n || throw("Can't form WreathProductElem: lengths differ")
return new(n, p)
end
end