kalmar/Groups.jl
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faster versions of * and inv for products of rings

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kalmar 2017-07-21 16:04:45 +02:00
parent 6f08259466
commit 6fa01d87ef
1 changed files with 2 additions and 2 deletions
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src/DirectProducts.jl
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@ -170,7 +170,7 @@ function *{T<:RingElem}(g::DirectProductGroupElem{T}, h::DirectProductGroupElem{
if check if check
parent(g) == parent(h) || throw("Can not multiply elements of different groups!") parent(g) == parent(h) || throw("Can not multiply elements of different groups!")
end end
return DirectProductGroupElem([a+b for (a,b) in zip(g.elts,h.elts)]) return DirectProductGroupElem(g.elts + h.elts)
end end
############################################################################### ###############################################################################
@ -189,7 +189,7 @@ function inv{T<:GroupElem}(g::DirectProductGroupElem{T})
end end
function inv{T<:RingElem}(g::DirectProductGroupElem{T}) function inv{T<:RingElem}(g::DirectProductGroupElem{T})
return DirectProductGroupElem([-a for a in g.elts]) return DirectProductGroupElem(-g.elts)
end end
############################################################################### ###############################################################################