Results 271 to 280 of about 9,480,720 (296)

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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Orthogonal resolutions of triple systems

Australas. J Comb., 1995
A parallel class \(P\) of a design \((V, {\mathcal B})\) with point set \(V\) and block collection \(\mathcal B\) is a subset \(P\) of \(\mathcal B\) such that each element of \(V\) is in precisely one block of \(P\). A design \((V, {\mathcal B})\) is said to be resolvable if the blocks of \(\mathcal B\) can be partitioned into parallel classes.
Charles J. Colbourn, Alexander Rosa
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Lie and Jordan Triple Systems

American Journal of Mathematics, 1949
The present paper is devoted to a study of subspaces of an associative algebra that are closed relative to the ternary operation [[a, b], c] where \( \left[ {a,b} \right] = ab - ba \) Such systems—called Lie triple systems—arise in a natural way in the study of Jordan algebras and of Jordan triple systems.
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Nanoparticle drug delivery systems and their applications as targeted therapies for triple negative breast cancer

Progress in Materials Science, 2023
Yihang Qi, Xiangyi Kong, Kuo Chu Hwang
exaly  

The spectrum of rotational directed triple systems and rotational Mendelsohn triple systems

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

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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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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Triple Helix Systems: An Analytical Framework for Innovation Policy and Practice in the Knowledge Society

Industry and Higher Education, 2013
Henry Etzkowitz, Marina Ranga
exaly  

Perfect dexagon triple systems

Discrete Mathematics, 2008
C C Lindner, A Rosa
exaly  

Anti-mitre steiner triple systems

Graphs and Combinatorics, 1994
Charles Colbourn, Alexander Rosa
exaly