24 search results - page 1 / 5 » On sets of integers whose shifted products are powers |
JCT
2008
13 years 7 months ago
2008
IPL
2011
13 years 1 months ago
2011
Any Gray code for a set of combinatorial objects defines a total order relation on this set: x is less than y if and only if y occurs after x in the Gray code list. Let ≺ denot...
EJC
2008
13 years 7 months ago
2008
The distinguishing number D(G) of a graph G is the least integer d such that G has a labeling with d labels that is preserved only by a trivial automorphism. We prove that Cartesi...
WCC
2005
Springer
14 years 26 days ago
2005
Springer
We present constructions of polyphase sequences suitable for the use as codewords in orthogonal frequency-division multiplexing (OFDM) with strictly bounded peak-to-mean envelope p...
MP
2010
13 years 2 months ago
2010
We consider the single item lot-sizing problem with capacities that are non-decreasing over time. When the cost function is i) non-speculative or Wagner-Whitin (for instance, cons...