kalmar/Groups.jl
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reworked inv + doc

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kalmar 2017-07-21 16:02:44 +02:00
parent 70a8a9b72d
commit c60e5a8c5c
1 changed files with 3 additions and 4 deletions
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src/WreathProducts.jl
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@ -184,12 +184,11 @@ end
doc""" doc"""
inv(g::WreathProductElem) inv(g::WreathProductElem)
> Returns the inverse of element of a wreath product, according to the formula > Returns the inverse of element of a wreath product, according to the formula
> g^-1 = (g.n, g.p)^-1 = (g.p^-1(g.n^-1), g.p^-1). > `g^-1 = (g.n, g.p)^-1 = (g.p^-1(g.n^-1), g.p^-1)`.
""" """
function inv(g::WreathProductElem) function inv(g::WreathProductElem)
G = parent(g) w = DirectProductGroupElem(inv(g.n).elts[g.p.d])
w = G.N(inv(g.n).elts[g.p.d]) return WreathProductElem(w, inv(g.p), false)
return G(w, inv(g.p))
end end
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