Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5776763 | Discrete Mathematics | 2017 | 7 Pages |
Abstract
In this paper we continue the study on the existence of URDs of block sizes 2 and 4. We improve the known results by reducing the number of open cases from 1338 to 16. In addition, we prove that there exist 4-RGDDs of types 2178, 2250 and 2334.
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
Hengjia Wei, Gennian Ge,