15 search results - page 1 / 3 » On enumeration of hypergroups of order 3 |
CMA
2010
13 years 2 months ago
2010
In this paper we present a symbolic manipulation package that enumerates the hypergroups of order 3. It separates them to isomorphic classes and calculates their cardinality. Key ...
JSYML
2007
13 years 4 months ago
2007
Abstract. To each computable enumerable (c.e.) set A with a particular enumeration {As}s∈ω, there is associated a settling function mA(x), where mA(x) is the last stage when a n...
APAL
2011
12 years 12 months ago
2011
We study ideals in the computably enumerable Turing degrees, and their upper bounds. Every proper Σ0 4 ideal in the c.e. Turing degrees has an incomplete upper bound. It follows t...
COMBINATORICS
2000
13 years 4 months ago
2000
We find a generating function expressed as a continued fraction that enumerates ordered trees by the number of vertices at different levels. Several Catalan problems are mapped to...
TOG
2002
13 years 4 months ago
2002
Efficient algorithms for compressing geometric data have been widely developed in the recent years, but they are mainly designed for closed polyhedral surfaces which are manifold ...