ZIB

Treffer pro Seite

Treffer 1 - 2 | 2 Treffer

Sortierung

Digitale Medien

Did chickens go North? New evidence for domestication

West, B. ; Zhou, B.-X.

Amsterdam : Elsevier

Journal of Archaeological Science 15 (1988), S. 515-533

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0305-4403

Schlagwort(e): China ; Europe ; Red junglefowl ; Russia ; chicken domestication ; faunal remains ; palaeoclimate

Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Thema: Klassische Archäologie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1016/0305-4403(88)90080-5

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Representing an ordered set as the intersection of super greedy linear extensions (1987)

Kierstead, H. A. ; Trotter, W. T. ; Zhou, B.

Springer

Order 4 (1987), S. 293-311

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1572-9273

Schlagwort(e): 06A05 ; Ordered sets ; linear extensions ; super greedy dimensions

Quelle: Springer Online Journal Archives 1860-2000

Thema: Mathematik

Notizen: Abstract A linear extension [x 1〈x2〈...〈xt] of a finite ordered set P=(P, 〈) is super greedy if it can be obtained using the following procedure: Choose x 1 to be a minimal element of P; suppose x 1,...,x i have been chosen; define p(x) to be the largest j≤i such that x j〈x if such a j exists and 0 otherwise; choose x i+1 to be a minimal element of P-{ x 1,...,x i} which maximizes p. Every finite ordered set P can be represented as the intersection of a family of super greedy linear extensions, called a super greedy realizer of P. The super greedy dimension of P is the minimum cardinality of a super greedy realizer of P. Best possible upper bounds for the super greedy dimension of P are derived in terms of |P-A| and width (P-A), where A is a maximal antichain.