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COMBINATORICS
2006
13 years 9 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 9 months ago
2002
COMBINATORICS
2006
13 years 9 months ago
2006
COMBINATORICS
2004
13 years 9 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 9 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...