Results 91 to 100 of about 2,165,172 (354)

The Hilbert schemes of points on surfaces with rational double point singularities [PDF]

open access: yesarXiv, 2017
We prove that the Hilbert scheme of points on a normal quasi-projective surface with at worst rational double point singularities is irreducible.
arxiv  

Asymptotically Hyperbolic Manifolds with Boundary Conjugate Points but no Interior Conjugate Points [PDF]

open access: yesarXiv, 2019
We construct non-trapping asymptotically hyperbolic manifolds with boundary conjugate points but no interior conjugate points.
arxiv  

Some Concepts of Modern Algebraic Geometry: Point, Ideal and Homomorphism [PDF]

open access: yes, 1994
Starting from classical algebraic geometry over the complex numbers (as it can be found for example in Griffiths and Harris it was the goal of these lectures to introduce some concepts of the modern point of view in algebraic geometry.
Schlichenmaier, Martin
core   +2 more sources

The Geometry of Fixed Point Varieties on Affine Flag Manifolds

open access: yes, 1999
Let $G$ be a semisimple, simply connected, algebraic group over an algebraically closed field $k$ with Lie algebra $\frak g$. We study the spaces of parahoric subalgebras of a given type containing a fixed nil-elliptic element of $\frak g\otimes k((\pi))$
Sage, Daniel S.
core   +1 more source

A Density-Aware Point Cloud Geometry Compression Leveraging Cluster- Centric Processing

open access: yesIEEE Access
Recent years have encountered a noticeable expansion of point cloud-based 3D applications that compels the necessity of high-efficiency point cloud compression.
Fariha Afsana   +3 more
doaj   +1 more source

Grassmannians of lines defined in the geometry of a pseudo-polarity [PDF]

open access: yesarXiv, 2012
The regular point-line geometry with respect to a pseudo-polarity is introduced. It is weaker than the underlying metric-projective geometry. The automorphism group of this geometry is determined. This geometry can be also expressed as the geometry of regular lines and planes.
arxiv  

Hilbert geometries with Riemannian points [PDF]

open access: yesAnnali di Matematica Pura ed Applicata (1923 -), 2019
If a Hilbert geometry of twice differentiable boundary has two quadratic infinitesimal spheres, then the Hilbert geometry is a Cayley–Klein model of the hyperbolic geometry.
Árpád Kurusa, Árpád Kurusa
openaire   +3 more sources

On the constellations of Weierstrass points [PDF]

open access: yesarXiv, 1996
We prove that the constellation of Weierstrass points characterizes the isomorphism-class of double covering of curves of genus large enough.
arxiv  

Five Definitions of Critical Point at Infinity [PDF]

open access: yesarXiv, 1997
This survey paper discusses five equivalent ways of defining a ``critical point at infinity'' for a complex polynomial of two variables.
arxiv  

Impartial Achievement Games on Convex Geometries [PDF]

open access: yesarXiv, 2020
We study a game where two players take turns selecting points of a convex geometry until the convex closure of the jointly selected points contains all the points of a given winning set. The winner of the game is the last player able to move. We develop a structure theory for these games and use it to determine the nim number for several classes of ...
arxiv  

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