Results 41 to 50 of about 1,114 (57)

On minimal hypersurfaces of nonnegatively Ricci curved manifolds

open access: yes, 1992
International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 3, Page 573-578, 1993.
Yoe Itokawa
wiley   +1 more source

Free torus actions and twisted suspensions

open access: yesForum of Mathematics, Sigma
We express the total space of a principal circle bundle over a connected sum of two manifolds in terms of the total spaces of circle bundles over each summand, provided certain conditions hold.
Fernando Galaz-García, Philipp Reiser
doaj   +1 more source

Mutually unbiased bases via complex projective trigonometry

open access: yesOpen Mathematics
In this study, we give a synthetic construction of a complete system of mutually unbiased bases in C3{{\mathbb{C}}}^{3}.
Katz Mikhail G.
doaj   +1 more source

A simplified Proof of the Hopf Conjecture

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
The use of the barycentre map between two copies of ℝn , the first one with a metric without conjugate points, the second one with the canonical flat metric, allows to prove in a simplified way the fact that Riemannian tori without conjugate points are ...
Sabatini Luca
doaj   +1 more source

Gromov-Hausdorff limits of closed surfaces

open access: yesAnalysis and Geometry in Metric Spaces
We completely describe the Gromov-Hausdorff closure of the class of length spaces being homeomorphic to a fixed closed surface.
Dott Tobias
doaj   +1 more source

Eigenvalues and Holonomy

open access: yes, 2002
We estimate the eigenvalues of connection Laplacians in terms of the non-triviality of the holonomy.Comment: 9 ...
Ballmann, Werner   +2 more
core  

Plasma Ceramides and Risk of Impaired Lower-Extremity Function in Older Adults: A Nested Case-Control Study. [PDF]

open access: yesJ Gerontol A Biol Sci Med Sci, 2021
Caballero FF   +4 more
europepmc   +1 more source

Curvatures of the diagonal lift from an affine manifold to the linear frame bundle

open access: yesOpen Mathematics, 2012
Kowalski Oldřich, Sekizawa Masami
doaj   +1 more source

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