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Related papers: Slice-quaternionic Hopf surfaces

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We study quartic surfaces that admit a group of projective automorphisms isomorphic to icosahedron group.

Algebraic Geometry · Mathematics 2017-12-27 Igor Dolgachev

We study holomorphic locally homogeneous geometric structures modelled on line bundles over the projective line. We classify these structures on primary Hopf surfaces. We write out the developing map and holonomy morphism of each of these…

Differential Geometry · Mathematics 2019-11-12 Benjamin McKay , Alexey Pokrovskiy

In this note we study logarithmic transformations in the sense of differential topology on two fibers of the Hopf surface. It is known that such transformations are susceptible to yield exotic smooth structures on four-manifolds. We will…

Geometric Topology · Mathematics 2007-05-23 Raphael Zentner

In the present paper we introduce and study a new notion of toric manifold in the quaternionic setting. We develop a construction with which, starting from appropriate $m$-dimensional Delzant polytopes, we obtain manifolds of real dimension…

Differential Geometry · Mathematics 2016-12-19 Graziano Gentili , Anna Gori , Giulia Sarfatti

The recent definition of slice regular function of several quaternionic variables suggests a new notion of quaternionic manifold. We give the definition of quaternionic regular manifold, as a space locally modeled on $\mathbb{H}^n$, in a…

Complex Variables · Mathematics 2016-12-13 Graziano Gentili , Anna Gori , Giulia Sarfatti

This thesis investigates cusp cross-sections of arithmetic real, complex, and quaternionic hyperbolic $n$--orbifolds. We give a smooth classification of these submanifolds and analyze their induced geometry. One of the primary tools is a…

Geometric Topology · Mathematics 2007-05-23 D. B. McReynolds

We study spin structures on Riemann and Klein surfaces in terms of divisors. In particular, we take a closer look at spin structures on hyperelliptic and $p$-gonal surfaces defined by divisors supported on their branch points. Moreover, we…

Complex Variables · Mathematics 2018-01-03 Yahya Almalki , Craig A. Nolder

In this work we obtain some geometric properties of biconservative surfaces into a Riemannian manifold. In particular, we shall study the relationship between biconservative surfaces and the holomorphicity of a generalized Hopf function.…

Differential Geometry · Mathematics 2014-06-27 S. Montaldo , C. Oniciuc , A. Ratto

This paper is devoted to the study of affine quaternionic manifolds and to a possible classification of all compact affine quaternionic curves and surfaces. It is established that on an affine quaternionic manifold there is one and only one…

Differential Geometry · Mathematics 2024-03-13 Graziano Gentili , Anna Gori , Giulia Sarfatti

Inspired from the Cholewinski approach see [5], we investigate a family of Fock spaces in the quaternionic slice hyperholomorphic setting as well as some associated quaternionic linear operators. In a particular case, we reobtain the slice…

Complex Variables · Mathematics 2019-05-01 Kamal Diki

We review old and new properties of Hopf manifolds from the point of view of their analytic and metric structure.

Differential Geometry · Mathematics 2025-03-26 Nicolina Istrati , Alexandra Otiman

With the help of a new type of functionals we study manifolds diffeomorphic to $S^2\times S^2$ and establish, in particular, the Hopf conjecture.

General Mathematics · Mathematics 2009-10-16 Valery Marenich

We determine explicitly the structure of the automorphism group of a parabolic Inoue surface. We also describe the quotients of the surface by typical cyclic subgroups of the automorphism group.

Algebraic Geometry · Mathematics 2009-04-01 A. Fujiki

We study the geometry and codes of quartic surfaces with many cusps. We apply Gr\"obner bases to find examples of various configurations of cusps on quartics.

Algebraic Geometry · Mathematics 2014-12-23 Slawomir Rams

In this paper, we define the quaternionic Fock spaces $\mathfrak{F}_{\alpha}^p$ of entire slice hyperholomorphic functions in a quaternionic unit ball $\mathbb{B}$ in $\mathbb{H}.$ We also study growth estimate and various results of entire…

Functional Analysis · Mathematics 2016-11-17 Sanjay Kumar , S. D. Sharma , Khalid Manzoor

We study certain subgroups of the full group of Hopf algebra automorphisms of a biproduct. In the process interesting subgroups of certain permutation groups come into play.

Rings and Algebras · Mathematics 2015-03-03 David E. Radford

Firstly, we introduce a class of new algebraic systems which generalize Hopf quasigroups and Hopf $\pi-$algebras called $Q$-graded Hopf quasigroups, and research some properties of them. Secondly, we define the representations of $Q$-graded…

Rings and Algebras · Mathematics 2019-03-20 Guodong Shi , Shuanhong Wang

In this paper we establish quaternionic and octonionic analogs of the classical Riemann surfaces. The construction of these manifolds has nice peculiarities and the scrutiny of Bernhard Riemann approach to Riemann surfaces, mainly based on…

Complex Variables · Mathematics 2024-03-12 Graziano Gentili , Jasna Prezelj , Fabio Vlacci

We define in the setting of homotopy type theory an H-space structure on $\mathbb S^3$. Hence we obtain a description of the quaternionic Hopf fibration $\mathbb S^3\hookrightarrow\mathbb S^7\twoheadrightarrow\mathbb S^4$, using only…

Algebraic Topology · Mathematics 2016-10-06 Ulrik Buchholtz , Egbert Rijke

We present the construction of Inoue surfaces of type $S^{(+)}/S^{(-)}$ in terms of data arising from real quadratic number fields. We then describe the automorphism group of such surfaces in terms of this data.

Algebraic Geometry · Mathematics 2025-09-09 David Petcu
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