Results 1  10
of
172
On the generalization of the Costas property to higher dimensions
, 2008
"... We investigate the generalization of the Costas property in 3 or more dimensions, and we seek an appropriate definition; the 2 main complications are a) that the number of “dots ” this multidimensional structure should have is not obvious, and b) that the notion of the multidimensional permutation n ..."
Abstract

Cited by 2 (1 self)
 Add to MetaCart
We investigate the generalization of the Costas property in 3 or more dimensions, and we seek an appropriate definition; the 2 main complications are a) that the number of “dots ” this multidimensional structure should have is not obvious, and b) that the notion of the multidimensional permutation
On nowhere continuous Costas functions and infinite Golomb rulers
, 2008
"... We prove the existence of nowhere continuous bijections that satisfy the Costas property, as well as (countably and uncountably) infinite Golomb rulers. We define and prove the existence of real and rational Costas clouds, namely nowhere continuous Costas injections whose graphs are everywhere dense ..."
Abstract
 Add to MetaCart
We prove the existence of nowhere continuous bijections that satisfy the Costas property, as well as (countably and uncountably) infinite Golomb rulers. We define and prove the existence of real and rational Costas clouds, namely nowhere continuous Costas injections whose graphs are everywhere
Abstract Searching for Costas arrays using periodicity properties
"... Costas arrays are permutation matrices with ideal autoambiguity properties; No two of the the N choose 2 line segments between pairs of 1’s in the matrix have the same slope and length. This paper presents a search technique based on the periodicity properties of the existing construction technique ..."
Abstract
 Add to MetaCart
Costas arrays are permutation matrices with ideal autoambiguity properties; No two of the the N choose 2 line segments between pairs of 1’s in the matrix have the same slope and length. This paper presents a search technique based on the periodicity properties of the existing construction
On a problem of da Costa
 CLE ePrints
, 2001
"... Abstract. The two main founders of paraconsistent logic, Stanis̷law Ja´skowski and Newton da Costa, built their systems on distinct grounds. Starting from different projects, they used different tools and ultimately designed quite different calculi to attend their needs. How successful were their en ..."
Abstract

Cited by 10 (2 self)
 Add to MetaCart
´skowski expected it to enjoy the following properties (see [17]): Jas1 when applied to inconsistent systems it should not always entail their trivialization; Jas2 it should be rich enough to enable practical inferences; Jas3 it should have an intuitive justification. A few years later, in 1963, da Costa would
A REGULARITY PROPERTY OF GOLOMBCOSTAS ARRAYS
"... Abstract. A GolombCostas array is an arrangement of dots and blanks, defined for each positive integer power of a prime and satisfying certain unusual conditions. A dot occurring in such an array is an even/even position if it occurs in the ith row and jth column, where i and j are both even inte ..."
Abstract

Cited by 1 (1 self)
 Add to MetaCart
Abstract. A GolombCostas array is an arrangement of dots and blanks, defined for each positive integer power of a prime and satisfying certain unusual conditions. A dot occurring in such an array is an even/even position if it occurs in the ith row and jth column, where i and j are both even
40. PHYSICAL PROPERTIES OF SEDIMENTS OF THE COSTA RICA RIFT,
"... Values of physical properties measured in the upper sections of sediment cores recovered at Sites 504 and 505 exhibit a remarkable similarity. Below a depth of 145 m Site 504 sediments appear to have undergone changes which are reflected in physical property values. This alteration may have been du ..."
Abstract
 Add to MetaCart
Values of physical properties measured in the upper sections of sediment cores recovered at Sites 504 and 505 exhibit a remarkable similarity. Below a depth of 145 m Site 504 sediments appear to have undergone changes which are reflected in physical property values. This alteration may have been
Turk J Elec Engin, VOL.15, NO.1 2007, c ○ TÜB˙ITAK Data Mining and Costas Arrays
"... Costas arrays are used in RADAR (and SONAR) engineering to represent frequencyhopping patterns that optimize the RADAR’s performance. In this work, using all available Costas arrays up to and including order 26, as well as data mining techniques, we investigate how the Costas property and the balan ..."
Abstract
 Add to MetaCart
Costas arrays are used in RADAR (and SONAR) engineering to represent frequencyhopping patterns that optimize the RADAR’s performance. In this work, using all available Costas arrays up to and including order 26, as well as data mining techniques, we investigate how the Costas property
On Maximal Partial Costas Latin Squares
, 2013
"... A Costas array of order n is an n×n permutation matrix with the property that all of the n(n − 1)/2 line segments between pairs of 1’s differ in length or in slope. A Costas latin square of order n is an n × n latin square where for each symbol k, with 1 ≤ k ≤ n, the cells containing k determine a C ..."
Abstract
 Add to MetaCart
A Costas array of order n is an n×n permutation matrix with the property that all of the n(n − 1)/2 line segments between pairs of 1’s differ in length or in slope. A Costas latin square of order n is an n × n latin square where for each symbol k, with 1 ≤ k ≤ n, the cells containing k determine a
PARITY PROPERTIES OF COSTAS ARRAYS DEFINED VIA FINITE FIELDS
, 706
"... Abstract. A Costas array of order n is an arrangement of dots and blanks into n rows and n columns, with exactly one dot in each row and each column, the arrangement satisfying certain specified conditions. A dot occurring in such an array is even/even if it occurs in the ith row and jth column, w ..."
Abstract

Cited by 4 (4 self)
 Add to MetaCart
Abstract. A Costas array of order n is an arrangement of dots and blanks into n rows and n columns, with exactly one dot in each row and each column, the arrangement satisfying certain specified conditions. A dot occurring in such an array is even/even if it occurs in the ith row and jth column
Trivial extensions of local rings and a conjecture of Costa
 LECTURE NOTES IN PURE AND
, 2002
"... This paper partly settles a conjecture of Costa on (n,d)rings, i.e., rings in which npresented modules have projective dimension at most d. For this purpose, a theorem studies the transfer of the (n,d)property to trivial extensions of local rings by their residue fields. It concludes with a bri ..."
Abstract

Cited by 14 (10 self)
 Add to MetaCart
This paper partly settles a conjecture of Costa on (n,d)rings, i.e., rings in which npresented modules have projective dimension at most d. For this purpose, a theorem studies the transfer of the (n,d)property to trivial extensions of local rings by their residue fields. It concludes with a
Results 1  10
of
172