𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Designs from projective planes and PBD bases

✍ Scribed by Malcolm Greig


Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
305 KB
Volume
7
Category
Article
ISSN
1063-8539

No coin nor oath required. For personal study only.

✦ Synopsis


The essential theme of this article is the exploitation of known configurations in projective planes in order to construct pairwise balanced designs. Among the results shown are (q 2 + 1)/2 ∈ B((q + 1)/2, 2) for all odd prime powers q; the resolution of 31 of the Mullin and Stinson's open cases in the spectrum of B(P7, 1), where P7 is odd prime powers β‰₯ 7; some constructions showing the inessential nature of values in E a + , where E a + are PBD generating sets containing values equal to 1 mod(a) for 5 ≀ a ≀ 7; some constructions with block sizes being prime powers


πŸ“œ SIMILAR VOLUMES


Projective Planes and Hadamard Designs
✍ Chihiro Suetake πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 338 KB

In this article we show that projective planes with a small collineation group of perspectivities can be used to construct Hadamard designs. ## 2001 Academic Press Ko and Ray-Chaudhuri [7] and Arasu and Jungnickel [1] gave some correspondences from an affine difference set of order n with n#0 (mod

Ground- and excited-state properties of
✍ M. Preuss; W. G. Schmidt; K. Seino; J. FurthmΓΌller; F. Bechstedt πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 135 KB

We present equilibrium geometries, vibrational modes, dipole moments, ionization energies, electron affinities, and optical absorption spectra of the DNA base molecules adenine, thymine, guanine, and cytosine calculated from first principles. The comparison of our results with experimental data and