✦ LIBER ✦

Optimal holey packings OHP4(2, 4, n ,3)'s

✍ Scribed by Jianmin Wang; J. Yan

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 143 KB
Volume: 14
Category: Article
ISSN: 1063-8539
DOI: 10.1002/jcd.20084

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

An optimal holey packing OHP~d~(2, k, n, g) is equivalent to a maximal (g + 1)‐ary (n, k, d) constant weight code. In this paper, we provide some recursive constructions for OHP~d~(2, k, n, g)'s and use them to investigate the existence of an OHP~4~(2, 4, n, 3) for n ≡ 2, 3 (mod 4). Combining this with Wu's result (18), we prove that the necessary condition for the existence of an OHP~4~(2, 4, n, 3), namely, n ≥ 5 is also sufficient, except for n ∈ {6, 7} and except possibly for n = 26. © 2005 Wiley Periodicals, Inc. J Combin Designs 14: 111–123, 2006

📜 SIMILAR VOLUMES

Ring Currents as Probes of the Aromatici

Ring Currents as Probes of the Aromaticity of Inorganic Monocycles: P-5, As-5, S2N2, S3N-2, S4N+3, S4N2+4, S5N+5, S2+4 and Se2+4

✍ Frank De Proft; Patrick W. Fowler; Remco W. A. Havenith; Paul von Rague Schleyer 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 54 KB 👁 2 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

Spaltung von S4N4 zu S2N2 bei Raumtemper

Spaltung von S4N4 zu S2N2 bei Raumtemperatur: Bildung und Struktur von (AlCl3)2S2N2

✍ Prof. Dr. Ulf Thewalt; Maria Burger 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 212 KB 👁 2 views

Synthesis and Structure of the Group 12

Synthesis and Structure of the Group 12 Pyrimidinethiolate Complexes ∞3[Zn(S-2-N2C4H3)2], ∞2[Cd(S-2-N2C4H3)2], [Hg(S-2-N2C4H3)2] and[Cd(S-2-N2C4H3)2(tmeda)]

✍ Andreas Eichhöfer; Gernot Buth 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 294 KB 👁 1 views

S(2)- or N(3)-Substituted 2-Mercapto-5-(

S(2)- or N(3)-Substituted 2-Mercapto-5-(4-pyridyl)-1,3,4-oxadiazoles.

✍ A. Rutavicius; Z. Kuodis 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 210 KB 👁 1 views

Cleavage of S4N4 to S2N2 at Room Tempera

Cleavage of S4N4 to S2N2 at Room Temperature: Formation and Structure of (AlCl3)2S2N2

✍ Prof. Dr. Ulf Thewalt; Maria Burger 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 223 KB 👁 2 views

Synthesis and Chemistry of Dithiadiazole

Synthesis and Chemistry of Dithiadiazole Free Radicals [4-(4′-C5H4N)CN2S2] and [4-(3′-C5H4N)CN2S2]; X-ray Crystal Structures of [Pd3{μ-SNC(Ar′)NS–S,S′}2(PPh3)4] (Ar′ = 4′-C5H4N, 4′-C5H4NBEt3 and 3′-C5H4NBEt3)

✍ Wai-Kwok Wong; Chaode Sun; Wai-Yeung Wong; Daniel W. J. Kwong; Wing-Tak Wong 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 491 KB 👁 2 views

Two new 1,2,3,5-dithiadiazoles, [4-(4Ј-C 5 H 4 N)CN 2 S 2 ] (L 1 ) and [4-(3Ј-C 5 H 4 N)CN 2 S 2 ] (L 2 ), with different pyridyl groups at the 4-position were prepared. As Lewis bases, the dithiadiazoles reacted with Lewis acids via their pyridyl groups to form acid-base adducts with retention of t