Results 21 to 30 of about 253,540 (74)

The (1,2)-step competition graph of a hypertournament [PDF]

open access: yesarXiv, 2018
Competition graphs were created in connected to a biological model as a means of reflecting the competition relations among the predators in the food webs and determining the smallest dimension of ecological phase space. In 2011, Factor and Merz introduced the (1,2)-step competition graph of a digraph.
arxiv  

The Waterwheel in the Waterfall [PDF]

open access: yesarXiv, 2004
A fundamental problem in evolutionary ecology research is to explain how different species coexist in natural ecosystems. This question is directly related with species trophic competition. However, competition theory, based on the classical logistic Lotka-Volterra equations, leads to erroneous conclusions about species coexistence. The reason for this
arxiv  

The competition number of a generalized line graph is at most two [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, Vol 14, No 2 (2012) 1-10, 2011
In 1982, Opsut showed that the competition number of a line graph is at most two and gave a necessary and sufficient condition for the competition number of a line graph being one. In this note, we generalize this result to the competition numbers of generalized line graphs, that is, we show that the competition number of a generalized line graph is at
arxiv  

Spallation-Fission Competition in Heaviest Elements; Helium-Ion-Induced Reactions in Uranium Isotopes [PDF]

open access: green, 1958
R. Vandenbosch   +4 more
openalex   +1 more source

Domestic Competitive Balance and International Success: The Case of The Football Industry [PDF]

open access: yesarXiv
This paper examines the interdependence of international success and competitive balance of domestic sports competitions. More specifically, we apply the notion of the Herfindahl-Hirschman index to examine the effect of international rewards on distortion of competitive balance in domestic competitions and derive conditions under which the level of ...
arxiv  

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