Maths - Concrete Category - Lists

list as free monoid We can view a list as a free monoid.
That is this diagram commutes: list monoid triangle

This concept can be extended to other free structures see [R.M. Burstall and P.J. Landin, "Programs and their proofs, an algebraic approach", Machine Intelligence 4(1969)]

Lists as monads on this page


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cover Modern Graph Theory (Graduate Texts in Mathematics, 184)

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