Search Results - "Donovan, Diane M"
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QC-LDPC Codes From Difference Matrices and Difference Covering Arrays
Published in IEEE access (2023)“…We give a framework that generalizes LDPC code constructions using transversal designs or related structures such as mutually orthogonal Latin squares. Our…”
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On maximal partial Latin hypercubes
Published in Designs, codes, and cryptography (01-02-2024)“…A lower bound is presented for the minimal number of filled cells in a maximal partial Latin hypercube of dimension d and order n . The result generalises and…”
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Biembeddings of cycle systems using integer Heffter arrays
Published in Journal of combinatorial designs (01-12-2020)“…In this paper, we use constructions of Heffter arrays to verify the existence of face 2‐colorable embeddings of cycle decompositions of the complete graph…”
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Constructing and embedding mutually orthogonal Latin squares: reviewing both new and existing results
Published in Commentationes mathematicae Universitatis Carolinae (01-01-2020)Get full text
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The enumeration of cyclic mutually nearly orthogonal Latin squares
Published in Journal of combinatorial designs (01-05-2019)“…In this paper, we study collections of mutually nearly orthogonal Latin squares (MNOLS), which come from a modification of the orthogonality condition for…”
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Orthogonal Trades and the Intersection Problem for Orthogonal Arrays
Published in Graphs and combinatorics (01-05-2016)“…This work provides an orthogonal trade for all possible volumes N ∈ Z + \ { 1 , 2 , 3 , 4 , 5 , 7 } for block size 4. All orthogonal trades of volume N ⩽ 15…”
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Minimal homogeneous Steiner 2- ( v , 3 ) trades
Published in Discrete mathematics (28-03-2008)“…A Steiner 2- ( v , 3 ) trade is a pair ( T 1 , T 2 ) of disjoint partial Steiner triple systems, each on the same set of v points, such that each pair of…”
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Minimal homogeneous latin trades
Published in Discrete mathematics (06-09-2006)“…A latin trade is a subset of a latin square which may be replaced with a disjoint mate to obtain a new latin square. A d-homogeneous latin trade is one which…”
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A polynomial embedding of pairs of orthogonal partial Latin squares
Published in Journal of combinatorial theory. Series A (01-08-2014)“…We show that a pair of orthogonal partial Latin squares of order n can be embedded in a pair of orthogonal Latin squares of order at most 16n4 and all orders…”
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10
Orthogonal Trades in Complete Sets of MOLS
Published in The Electronic journal of combinatorics (28-07-2017)“…Let $B_p$ be the Latin square given by the addition table for the integers modulo an odd prime $p$. Here we consider the properties of Latin trades in $B_p$…”
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Cyclic Biembeddings of Twofold Triple Systems
Published in Annals of combinatorics (01-03-2014)“…We construct face two-colourable triangulations of the graph 2 K n in an orientable surface; equivalently biembeddings of two twofold triple systems of order n…”
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Self-embeddings of cyclic and projective Steiner quasigroups
Published in Journal of combinatorial designs (01-01-2011)“…It is shown that for every admissible order v for which a cyclic Steiner triple system exists, there exists a biembedding of a cyclic Steiner quasigroup of…”
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Embedding partial Latin squares in Latin squares with many mutually orthogonal mates
Published 12-11-2018“…We show that any partial Latin square of order $n$ can be embedded in a Latin square of order at most $16n^2$ which has at least $2n$ mutually orthogonal…”
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14
Orthogonal trades in complete sets of MOLS
Published 15-07-2016“…Let $B_p$ be the Latin square given by the addition table for the integers modulo an odd prime $p$. Here we consider the properties of Latin trades in $B_p$…”
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15
Distributive and anti-distributive Mendelsohn triple systems
Published 05-06-2015“…Can. Math. Bull. 59 (2016) 36-49 We prove that the existence spectrum of Mendelsohn triple systems whose associated quasigroups satisfy distributivity…”
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Difference Covering Arrays and Pseudo-Orthogonal Latin Squares
Published 09-02-2015“…Graphs and Combinatorics, July 2016, Volume 32, Issue 4, pp 1353--1374 Difference arrays are used in applications such as software testing, authentication…”
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