𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Traces of antichains

✍ Scribed by P. Frankl


Publisher
Springer Japan
Year
1989
Tongue
English
Weight
227 KB
Volume
5
Category
Article
ISSN
0911-0119

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Flattening Antichains
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Antichain sequences
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A subset A of an ordered set P is a cutset if each maximal chain of P meetsA ; if, in addition, A is an antichain call it an antichain cutset. Our principal result is a characterization, by means of a 'forbidden configuration', of those finite ordered sets, which can be expressed as the union of ant

Orbits of antichains revisited
✍ P.J Cameron; D.G Fon-Der-Flaass πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 472 KB
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On Infinite Antichains of Matroids
✍ G. Ding; B. Oporowski; J. Oxley πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 845 KB

Robertson and Seymour have shown that there is no infinite set of graphs in which no member is a minor of another. By contrast, it is well known that the class of all matroids does contains such infinite antichains. However, for many classes of matroids, even the class of binary matroids, it is not