Article
Keywords:
order; product of chains; ideal of maximum height; digit sum sequence
Summary:
We maximize the total height of order ideals in direct products of finitely many finite chains. We also consider several order ideals simultaneously. As a corollary, a shifting property of some integer sequences, including digit sum sequences, is derived.
References:
[3] Davey, B. A., Priestley, H. A.:
Introduction to Lattices and Order. Second edition, Cambridge University Press, New York (2002), xii+298.
MR 1902334 |
Zbl 1002.06001
[5] Grätzer, G.:
General Lattice Theory. New appendices with B. A. Davey, R. Freese, B. Ganter, M. Greferath, P. Jipsen, H. A. Priestley, H. Rose, E. T. Schmidt, S. E. Schmidt, F. Wehrung, R. Wille; Second edition. Birkhäuser, Basel (1998).
MR 1670580