547 search results - page 74 / 110 » dm 2008 |
82
Voted
DM
1999
15 years 13 days ago
1999
Pascal's rhombus is a variation of Pascal's triangle in which values are computed as the sum of four terms, rather than two. It is shown that the limiting ratio of the n...
71
Voted
DM
1999
15 years 13 days ago
1999
In this paper, we illustrate a method to enumerate two-dimensional directed animals, with compact sources, on both the square and the triangular lattice. We give a recursive descr...
85
Voted
DM
1999
15 years 13 days ago
1999
We construct a large number of record-breaking binary, ternary and quaternary codes. Our methods involve the study of BCH-codes over larger fields, concatenation, construction X a...
81
Voted
DM
1999
15 years 13 days ago
1999
Mosaics are orbits of partitions arising from music theoretical investigations. Various theorems from the field of "enumeration under finite group actions" are applied f...
98
Voted
DM
2006
15 years 24 days ago
2006
In this paper we continue our investigations from [HM01] regarding spanning subgraphs which imply the existence of cycle double covers. We prove that if a cubic graph G has a spann...