Results 111 to 120 of about 48,841 (303)
Hilbert and Pieri : two approaches to incidence and congruence in Euclidean geometry
, 1992 This graduate thesis is a study of specific geometric works of two mathematicians, David Hilbert (1862-1943) and Mario Pieri (1860-1913). These works, Hilbert's Foundations of Geometry and Pieri's "Of elementary geometry as a hypothetical-deductive ...
Tait, Karen L. Irvine
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Coset geometries with trialities and their reduced incidence graphs [PDF]
, 2019 In this article we explore combinatorial trialities of incidence geometries. We give a construction that uses coset geometries to construct examples of incidence geometries with trialities and prescribed automorphism group.
Leemans, Dimitri, Stokes, Klara
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Grazing exit versus grazing incidence geometry for x-ray absorption near edge structure analysis of arsenic traces [PDF]
, 2009 In the presented study the grazing exit x-ray fluorescence was tested for its applicability to x-ray absorption near edge structure analysis of arsenic in droplet samples.
Wobrauschek, P. +11 more
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High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks
Advanced Materials, EarlyView.A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza +11 more
wiley +1 more source
The geometry of architectural enclosures not only has direct impacts on the structural, spatial, and aesthetic aspects of the building but also influences thermal and, therefore, energy performance.
Colmenares Uribe, Andrea Paola +2 more
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The elementary divisors of the incidence matrix of skew lines in PG (3,q)
, 2012 The elementary divisors of the incidence matrix of lines in PG (3,q) are computed, where two lines are incident if and only if they are ...
Brouwer, A.E., Ducey, J.E., Sin, P.
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Advanced Materials, EarlyView.We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti +12 more
wiley +1 more source
Flexible Ag2Se‐Based Thermoelectrics: Fundamentals, Processing, and Device Applications
Advanced Materials, EarlyView.Ag2Se‐based thermoelectrics are reviewed from fundamental transport mechanisms to flexible device integration. Crystal structure, defect chemistry, and band features are correlated with performance optimization strategies and scalable fabrication routes.
Jie Qin +5 more
wiley +1 more source
Projective geometry on partially ordered sets
, 1981 A set of axioms is presented for a projective geometry as an incidence structure on partially ordered sets of "points" and "lines". The axioms reduce to the axioms of classical projective geometry in the case where the points and lines are unordered.
Ulrich Faigle, Christian Herrmann
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A PRESENTATION OF DESARGUES’ THEOREM APPLYING THE DESCRIPTIVE GEOMETRY RULES
Journal of Industrial Design and Engineering Graphics, 2006 This paper presents Desargues’ theorem in two ways: – the solution by incidence and succession; - the solution by the application of the descriptive geometry rules.
DRĂGULĂNESCU Elena, CĂLIN Eugenia
doaj