نتایج جستجو برای: pesudo cubic

تعداد نتایج: 34666  

Journal: :CoRR 2015
Anke van Zuylen

We show improved approximation guarantees for the traveling salesman problem on cubic graphs, and cubic bipartite graphs. For cubic bipartite graphs with n nodes, we improve on recent results of Karp and Ravi (2014) by giving a simple “local improvement” algorithm that finds a tour of length at most 5/4n − 2. For 2-connected cubic graphs, we show that the techniques of Mömke and Svensson (2011)...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1987

Journal: :International Mathematical Forum 2013

Journal: :Physical Review D 2016

Journal: :International Journal of Pure and Apllied Mathematics 2014

Journal: :Discrete Mathematics 1998

The effects of mechanochemical treatment of monoclinic zirconia in high energy planetary ball mill on its phase transformation were investigated. The mechanical treatment in ball mill reduces the grain size, increases microstrain, and causes phase transition to metastable nanostructured tetragonal and cubic phases. XRD and TEM results show considerable amounts of amorphous phase during ball mil...

2005
BERT VAN GEEMEN

We define and study a family of cubic surfaces in the projectivized tangent bundle over a four dimensional projective space associated to the root system D 5. The 27 lines are rational over the base and we determine the classifying map to the moduli space of marked cubic surfaces. This map has degree two and we use it to get short proofs for some results on the Chow group of the moduli space of...

Journal: :Chemistry and physics of lipids 2006
Walter F Schmidt Justin R Barone Barry Francis James B Reeves

Stearic acid (SA) is highly soluble in structurally diverse solvents. SA/solvent packing within a (24.8 A)3 cubic volume explains the stoichiometry of SA solubility at multiple temperatures in multiple solvents. In the absence of solvent, the cubic volume contains 25 molecules at van der Waals distances from each other. At 55 degrees C, SA occupied half the cubic volume in saturated solution of...

Journal: :Transactions of the American Mathematical Society 1967

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