Results 261 to 270 of about 107,847 (314)

A cost minimization analysis of the implementation of the international lung screening trial in Catalonia (Spain). [PDF]

open access: yesBMC Health Serv Res
Rosell A   +10 more
europepmc   +1 more source

Weighting health-related estimates in the GCAT cohort and the general population of Catalonia. [PDF]

open access: yesSci Rep
Blay N   +6 more
europepmc   +1 more source

Characterising Negative Symptoms in Schizophrenia: CHANSS study protocol

open access: yes
Wolpe N   +26 more
europepmc   +1 more source

Coincidences of Catalan and q-Catalan Numbers

Integers, 2011
AbstractLet
Paul Thomas Young, Florian Luca
openaire   +2 more sources

The Catalan Numbers

2015
The most important special case of Dyck words comes when \( a=b \) so that the words have the same number of dominant and nondominant letters. A slight variation on these Dyck words is ballot , which we also define here for completeness.
openaire   +2 more sources

Catalan Numbers, Their Generalization, and Their Uses

The Mathematical Intelligencer, 1991
The authors are concerned with four enumeration problems all involving the numbers \(f(p,n)=(pn)!/n!(pn-n+1)!\) for positive integers \(p-1\) and \(n\). (1) Let \(a(p,n)\) be the number of planted plane trees having exactly \(n\) vertices with out-degree \(n\).
Jean Pedersen, Peter Hilton
openaire   +2 more sources

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