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Showing 1 to 13 of 13 for “"triple system"”.

  1. PARTITIONING THE BLOCKS OF A STEINER TRIPLE SYSTEM INTO PARTIAL PARALLEL CLASSES

    Hodaj, Jezerca

    mtu Repository record

  2. Decomposing the blocks of a Steiner triple system of order 4v-3 into partial parallel classes of size v-1

    Tollefson, Leah C

    mtu Repository record

  3. Steiner triple systems and cycle structure

    Murphy, John PatrickUniversity of Central Lancashire1999

    … his first paper [24], research in Steiner triple systems has grown steadily. With increased and ready access to more powerfiul computers in recent times, this growth has accelerated significantly. Problems are now being solved which were previously considered too 'big' to contemplate using …

    cent-lancashire Repository record

  4. Combinatorial designs and their automorphism groups

    Lovegrove, Graham JohnThe Open University2009

    … concerns the automorphism groups of Steiner triple systems and of cycle systems. Although most Steiner triple systems have trivial automorphism groups [2], it is widely known that for every abstract group, there exists a Steiner triple system whose automorphism is isomorphic to that group …

    the-open-u Repository record

  5. Eulerian Properties of Design Hypergraphs and Hypergraphs with Small Edge Cuts

    Wagner, AndrewUniversité d'Ottawa / University of Ottawa2019

    … make the leap from quasi-eulerian to eulerian. A triple system of order n and index λ (denoted TS(n,λ)) is a 3-uniform hypergraph in which every pair of vertices lies together in exactly λ edges. A Steiner triple system of order n is a TS(n,1). We first give a proof that every TS(n,λ) with λ ⩾ 2 …

    ottawa-retro Repository record

  6. Tricyclic Steiner Triple Systems with 1-Rotational Subsystems.

    Tran, Quan Duc2007

    <p>A Steiner triple system of order <em>v</em>, denoted <em>STS</em>(<em>v</em>), is said to be <em>tricyclic</em> if it admits an automorphism whose disjoint cyclic decomposition consists of three cycles. In this thesis we give necessary and sufficient conditions for the existence of a tricyclic …

    etsu Repository record

  7. Bicyclic Mixed Triple Systems.

    Bobga, Benkam Benedict2005

    <p>In the study of triple systems, one question faced is that of finding for what order a decomposition exists. We state and prove a necessary and sufficient condition for the existence of a <em>bicyclic mixed triple system</em> based on the three possible partial orientations of the 3-cycle with …

    etsu Repository record

  8. High Spatial Resolution Observations of Young Stellar Binaries

    Ratzka, ThorstenUniversität Heidelberg

    … with both speckle-cameras and adaptive optics systems are used to improve our knowledge of the dynamical mass of the two companions of the M-dwarf LHS 1070 located in the solar neighbourhood. In the third part observations in the mid-infrared with the interferometric instrument MIDI at the VLTI …

    heid-diss Repository record

  9. Eclipsing Binaries and Period Changes in the SuperWASP Archive

    Lohr, MarcusThe Open University2015

    … their binary nature and modelling to determine system and component parameters. Amongst these were a probable close triple system containing a low-mass contact binary, and a doubly-eclipsing quintuple system, only the sixth known of its kind. Eleven post-common-envelope eclipsing binaries were …

    the-open-u Repository record

  10. Binary evolution in stellar dynamics

    Heggie, Douglas CameronUniversity of Cambridge1972

    … have demonstrated the importance in bound systems of energetic binaries formed dynamically. Since analytic and some numerical studies generally neglect three-body interactions, by which these form, it is desirable to establish what role they play in the evolution of a system. Many wide …

    cambridge Repository record

  11. Observational and evolutionary studies of neutron star X-ray binaries

    Lin, Jinrong, Ph. D. Massachusetts Institute of TechnologyMassachusetts Institute of Technology2011

    … studies of neutron stars in X-ray binary systems. A variety of topics are discussed, which are all related by a single scientific theme, namely, helping to set constraints on the mass-radius relation of neutron stars, and hence on their equations of state (EOS). In Chapter 1 we review the …

    mit Repository record

  12. Comprehensive analyses of massive binaries and implications on stellar evolution

    Shenar, TomerUniversität Potsdam

    … the majority of massive stars reside in binary systems. This thesis sets as a goal to quantify the impact of binarity (i.e., the presence of a companion star) on massive stars. For this purpose, massive binary systems in the Local Group, including OB-type binaries, high mass X-ray binaries …

    potsdam-diss Repository record

  13. Estimation of population totals from imperfect census, survey and administrative records

    Baffour-Awuah, BernardUniversity of Southampton2009

    … dependent latent class models, but within a triple system scenario most encounter problems regarding model identifiability; to be precise, the model solutions are not unique. Thus the thesis investigates the use of the Expectation Maximization (EM) algorithm to fit a locally dependent (and …

    soton Repository record