Abstract: MATH/CHEM/COMP 2002, Dubrovnik,
June 24-29, 2002
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On some primary and
secondary
structures in
combinatorics
Darko Veljan Department of Mathematics, Faculty of Science and Mathematics, University of Zagreb, Bijenička c. 30, HR-10002 Zagreb, Croatia We will present some bijective proofs of some well known facts in combinatorics. Some refined structures, e.g. secondary structures will also be discussed. These include Catalan, Motzkin, Narayana and secondary structure numbers from biology. Some log-convexity properties and asymptotics of these numbers will also be presented. |