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COMBINATORICS
2006
13 years 11 months ago
2006
The natural forms of the Leibniz rule for the kth derivative of a product and of Fa`a di Bruno's formula for the kth derivative of a composition involve the differential oper...
COMBINATORICS
2002
13 years 10 months ago
2002
COMBINATORICS
2006
13 years 11 months ago
2006
COMBINATORICS
2004
13 years 10 months ago
2004
We consider Class-Uniformly Resolvable frames (CURFs), which are group divisible designs with partial resolution classes subject to the class-uniform condition. We derive the nece...
COMBINATORICS
2002
13 years 10 months ago
2002
In a previous work [26], by considering paths that are partially weighted, the generating function of Dyck paths was shown to possess a type of symmetry, called an exchange relati...