Results 241 to 250 of about 228,875 (264)

Embeddings of pure mendelsohn triple systems and pure directed triple systems

Journal of Combinatorial Designs, 1995
AbstractIt is proved in this article that the necessary and sufficient conditions for the embedding of a λ‐fold pure Mendelsohn triple system of order v in λ‐fold pure Mendelsohn triple of order u are λu(u − 1) ≡ 0 (mod 3) and u ⩾ 2v + 1. Similar results for the embeddings of pure directed triple systems are also obtained. © 1995 John Wiley & Sons,
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On Triple Systems with Independent Neighbourhoods

Combinatorics, Probability and Computing, 2005
The vertex- and edge-set of a hypergraph \(\mathcal H\) -- only 3-uniform hypergraphs are considered -- are denoted respectively by \(V({\mathcal H})\), \(E({\mathcal H})\); the authors use ``simplified notation'', under which the edge with distinct vertices \(x,y,z\) may be written as a word \(xyz\) (where vertices commute). The neighbourhood \(N(ab)\)
Füredi, Zoltán, Pikhurko, Oleg, Simonovits, Miklós   +2 more
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Triple Graph Grammars or Triple Graph Transformation Systems?

2009
Triple graph grammars have been used to specify consistency maintenance between inter-dependent and evolving models at a high level of abstraction. On a lower level, consistency maintenance may be specified by a triple graph transformation system, which takes care of all operational details required for executing consistency maintenance operations.
Thomas Buchmann, Alexander Dotor, Bernhard Westfechtel   +2 more
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The spectrum of rotational directed triple systems and rotational Mendelsohn triple systems [PDF]

Australas. J Comb., 1999
Summary: Necessary and sufficient conditions for the existence of \(k\)-rotational directed triple systems and \(k\)-rotational Mendelsohn triple systems are derived.
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A class of extended triple systems and numbers of common triples [PDF]

Australas. J Comb., 1995
The author studies the case when two extended triple systems have exactly \(k\) blocks in common. Let \(I(v)= \{0,1,\dots, S_v- 3, S_v\}\) where \(S_v= v(v+ 3)/6\) is the number of blocks in an extended triple system. Let \(J(v)\) be the set of integers \(k\) such that there exist two triple systems with \(k\) blocks in common. Then \(J(9)= I(9)- 13\),
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Close triple star systems

Astrophysics and Space Science, 1985
Triple star systems, especially those in which one star has very small mass may be more common than has been generally considered. Here is summarized some of the recent evidence supporting this possibility.
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Energy, exergy, economy and environmental (4E) analysis and optimization of single, dual and triple configurations of the power systems: Rankine Cycle/Kalina Cycle, driven by a gas turbine

Energy Conversion and Management, 2021
Özkan Kose, Huseyin Yagli
exaly  

Bicyclic directed triple systems

Ars Comb., 1998
The paper is about directed triple systems \(\text{DTS}(v)\) which admit an automorphism with cycles of lengths \(N \leq M\), \(N+M = v\). It is proved that for \(N = M\) necessary and sufficient conditions for the existence of such a directed triple system can be expressed by \(v \equiv 4 \pmod 6\), while for ...
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Nanoparticle drug delivery systems and their applications as targeted therapies for triple negative breast cancer

Progress in Materials Science, 2023
Xiangyi Kong, Yihang Qi, Yi Fang
exaly  

The algebraic and geometric classification of nilpotent Lie triple systems up to dimension four

Revista De La Real Academia De Ciencias Exactas, Fisicas Y Naturales - Serie A: Matematicas, 2022
Hani Abdelwahab
exaly