Results 61 to 70 of about 4,039,367 (143)

Relative cubulation of relative strict hyperbolization

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 4, April 2025.
Abstract We prove that many relatively hyperbolic groups obtained by relative strict hyperbolization admit a cocompact action on a CAT(0)$\operatorname{CAT}(0)$ cubical complex. Under suitable assumptions on the peripheral subgroups, these groups are residually finite and even virtually special.
Jean‐François Lafont, Lorenzo Ruffoni
wiley   +1 more source

The maximal codegree of the quaternionic projective spaces

open access: yesHiroshima Mathematical Journal, 1990
Let \(\alpha\) be a k-dimensional orientable real vector bundle over a finite connected CW-complex X with Thom space \(X^{\alpha}\) and i: \(S^ k=\{x_ 0\}^{\alpha}\to X^{\alpha}\) the canonical inclusion. For a multiplicative cohomology theory \(E^*\) with unit 1 define the E- codegree of \(\alpha\), \(cd^ E(\alpha)\) to be the smallest \(n\in {\mathbb{
openaire   +2 more sources

ON A COMPACT AND MINIMAL REAL HYPERSURFACE IN A QUATERNIONIC PROJECTIVE SPACE

open access: yesBulletin of the Korean Mathematical Society, 2005
Let \(\mathbb Q\mathbb P^n\) be a quaternionic projective space of real dimension \(4n\) \((n\geq 2)\), with the Fubini-Study metric of constant \(\mathbb Q\)-sectional curvature 4 and \(M^{\mathbb Q}_{0, n-1}\) be the geodesic minimal hypersphere of \(\mathbb Q\mathbb P^n\). The authors give a new characterization of the hypersphere \(M^{\mathbb Q}_{0,
Choe, Yeong-Wu, Jeong, Imsoon
openaire   +3 more sources

Involutions on the product of Quaternionic Projective space and Sphere

open access: yes, 2023
Let G = Z2 act on a finite CW-complex X having mod 2 cohomology isomorphic to the product of quaternionic projective space and sphere HPn x Sm, n, m > or = 1. This paper is concerned with the connected fixed point sets and the orbit spaces of free involutions on X.
Dimpi, Singh, Hemant Kumar
openaire   +2 more sources

Submaximally symmetric almost quaternionic structures [PDF]

open access: yes, 2017
The symmetry dimension of a geometric structure is the dimension of its symmetry algebra. We investigate symmetries of almost quaternionic structures of quaternionic dimension n. The maximal possible symmetry is realized by the quaternionic projective
Zalabová, Lenka   +5 more
core   +1 more source

Cycle-parallel real hypersurfaces of quaternionic projective space [PDF]

open access: yesTsukuba Journal of Mathematics, 1993
A hypersurface \(M\) of a Riemannian manifold \(A\) is said to be cyclic- parallel, if its shape operator \(A\) satisfies \({\mathfrak S} \langle (\nabla_ X A)Y, Z\rangle = 0\) for all \(X\), \(Y\), \(Z\) tangent to \(M\) where \(\mathfrak S\) denotes the cyclic sum with respect to \(X\), \(Y\), \(Z\). In the paper the following is proved: Let \(N\) be
openaire   +2 more sources

Equivariant harmonic maps of the complex projective spaces into the quaternion projective spaces

open access: yesEquivariant harmonic maps of the complex projective spaces into the quaternion projective spaces
We classify equivariant harmonic maps of the complex projective spaces CPm into the quaternion projective spaces. To do this, we employ differential geometry of vector bundles and connections. When the domain is the complex projective line, we have one parameter family of those maps. (This result is already shown in [2]and [4]in other ways).
Isami Koga, Yasuyuki Nagatomo
openaire   +3 more sources

Group actions on homology quaternionic projective planes

open access: yes, 1978
A class of Z p {{\mathbf {Z}}_p} -actions, resembling well-known actions on the quaternionic projective plane, is defined and studied.
Steven H. Weintraub
core   +1 more source

Actions of Vanishing Homogeneity Rank on Quaternionic-Kähler Projective Spaces

open access: yesJournal of Lie Theory, 2008
We classify isometric actions of compact Lie groups on quaternionic-Kähler projective spaces with vanishing homogeneity rank. We also show that they are not in general quaternion-coisotropic.
BEDULLI, LUCIO, GORI A.
openaire   +5 more sources

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