CORR
2010
Springer
13 years 10 months ago
2010
Springer
ly correct bijection between higher-order abstract syntax (HOAS) and the natural numbers enables one to define a "not equals" relationship between terms and also to have ...
JCT
2010
13 years 11 months ago
2010
The pattern-avoiding fillings of Young diagrams we study arose from Postnikov’s work on positive Grassman cells. They are called Γ -diagrams, and are in bijection with decorate...
JCT
2010
13 years 11 months ago
2010
Abstract. We present bijections between four classes of combinatorial objects. Two of them, the class of unlabeled (2 + 2)-free posets and a certain class of involutions (or chord ...
COMBINATORICS
2002
14 years 8 days ago
2002
If G = Kn is the complete graph, the classical Pr