Re: Transitive Closure

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"Alfredo Novoa" <alfredo_at_ncs.es> wrote in message news:e4330f45.0405161549.7f66ece8_at_posting.google.com...

> The commutative property does not make sense with unary operators like
> TClose. Unary operators are always commutative because there is only
> one operand's order.

Commutativity does make sense with unary operators. M--f-->M--g-->M
fg = gf or fg != gf

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