CORR
2010
Springer
13 years 2 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 2 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 2 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
13 years 4 months ago
2002
If G = Kn is the complete graph, the classical Pr