Results 111 to 120 of about 545,751 (316)
Elementary Surprises in Projective Geometry [PDF]
arXiv, 2009 We discuss eight new(?) configuration theorems of classical projective geometry in the spirit of the Pappus and Pascal theorems.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study evaluates a novel cone‐beam computed tomography (CBCT) imaging solution integrated onto a conventional C‐arm linear accelerator (linac) with increased gantry speed. The purpose is to assess the impact of improved imaging hardware and reconstruction algorithms on image quality.
Theodore Arsenault +9 more
wiley +1 more source
On differential geometry intrinsically connected with a surface element of projective arc length [PDF]
, 1941 P. O. Bell
openalex +1 more source
(Semi-)Riemannian geometry of (para-)octonionic projective planes [PDF]
arXiv, 2007 We use reduced homogeneous coordinates to study Riemannian geometry of the octonionic (or Cayley) projective plane. Our method extends to the para-octonionic (or split octonionic) projective plane, the octonionic projective plane of indefinite signature, and the hyperbolic dual of the octonionic projective plane; we discuss these manifolds in the later
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The aim of this study was to investigate the influence of the simultaneous multislice acceleration (SMS) technique as well as two‐dimensional (2D) and three‐dimensional (3D) tumor segmentations on radiomics features (RFs) within the parametric maps of cervical cancer, which were computed by intravoxel incoherent motion (IVIM) and ...
Shuangquan Ai +6 more
wiley +1 more source
On manifolds with holomorphic normal projective connections [PDF]
Math. Ann. 329 (2004), 379-400, 2002 The authors give a complete classification of projective threefolds admitting a holomorphic normal projective connection. Moreover, they prove a general structure theorem on complex projective manifolds admitting a holomorphic normal projective connection, saying in particular, that any such manifold is either the projective space or minimal in the ...
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Current radiotherapy practices rely on manual contouring of CT scans, which is time‐consuming, prone to variability, and requires highly trained experts. There is a need for more efficient and consistent contouring methods. This study evaluated the performance of the Varian Ethos AI auto‐contouring tool to assess its potential integration into
Robert N. Finnegan +6 more
wiley +1 more source
Machine learning the dimension of a Fano variety. [PDF]
Nat Commun, 2023 Coates T, Kasprzyk AM, Veneziale S.
europepmc +1 more source
All regulators of flat bundles are torsion [PDF]
arXiv, 1994 I prove the Bloch conjecture:all secondary characteristic classes of flat bundles over complex projective varietes are torsion, except the first.
arxiv
Differential geometry of complex projective space curves
Manuscripta Mathematica, 1983 We give explicit formulas for the Gaussian curvature and other differential geometric functions of a holomorphic curve in complex projective space. It is proved that the curve is uniquely determined by these functions up to an isometry of the ambient space.
openaire +2 more sources