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Enumeration of the Binary Trees - http://ulcar.uml.edu/~iag/CS/Catalan.html
A note on Catalan numbers by Ivan Galkin. |
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Polya's Enumeration Theorem - http://www.mathreference.com/cmb-gf,pet.html
An article on generating functions and Polya's theory of counting by Karl Dahlke. |
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Counting Young Tableaux - http://bergeron.math.uqam.ca/Bessel/bessel.html
An article on counting Young tableaux of bounded height by François Bergeron and Francis Gascon. |
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Lectures in Combinatorics - http://www.freewebs.com/desargues/combinatorics.htm
An introduction to partially ordered sets, Dilworth's theorem, lattices and combinatorial geometries. |
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A New Proof of the Four Colour Theorem - http://www.dharwadker.org/
By Ashay Dharwadker. Includes profile, research papers for other algorithms, lecture notes, and student database. |