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The number of blocks with a given defect group

✍ Scribed by Geoffrey R Robinson


Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
562 KB
Volume
84
Category
Article
ISSN
0021-8693

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πŸ“œ SIMILAR VOLUMES


Nonseparable graphs with a given number
✍ Ranko Ε Δ‡epanoviΔ‡; Gerhard Ringel; Dragan MaruΕ‘ič; G. L. Chia; Brian Alspach πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 646 KB

## Abstract G. Ringel conjectured that for every positive integer __n__ other than 2, 4, 5, 8, 9, and 16, there exists a nonseparable graph with __n__ cycles. It is proved here that the conjecture is true even with the restriction to planar and hamiltonian graphs.

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✍ G.L. Ebert πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 736 KB

It is well known that it is possible to construct ($-q)/2 (miquelian) inversive planes of order q on the same set of points which pairwise intersect in precisely the circles through infinity. Here we give an explicit description of such a family by "projecting" certain Buekenhout-Metz unitals in a w