𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Variations to a theorem of H. Nagao

✍ Scribed by Arye Juhász


Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
336 KB
Volume
70
Category
Article
ISSN
0021-8693

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Variations of Cohen’s theorem
✍ G. J. Chae; H. O. Kim; R. Y. Kim 📂 Article 📅 2001 🏛 Japan Society for Industrial and Applied Mathemati 🌐 English ⚖ 433 KB
Variations on a theorem of Ryser
✍ Dasong Cao; V. Chvátal; A.J. Hoffman; A. Vince 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 304 KB

A famous theorem of Ryser asserts that a v x v zero-one matrix A satisfying AA r --(k -k)I + aJ with k ~ k must satisfy k + (v -1)k = k 2 and ArA (k -k)I + A J; such a matrix A is called the incidence matrix of a symmetric block design. We present a new, e/ementary proof of Ryser's theorem and give

Variations on a theorem of Petersen
✍ K. S. Bagga; L. W. Beineke; G. Chartrand; O. R. Oellermann 📂 Article 📅 1988 🏛 Springer Netherlands 🌐 English ⚖ 331 KB