Results 11 to 20 of about 5,063,462 (161)

Purity and hybridness of two tensors on a real hypersurface in complex projective space

open access: yesOpen Mathematics
On a real hypersurface MM in complex projective space, we can define two tensor fields of type (1, 2), AF(k){A}_{F}^{\left(k)} and AT(k){A}_{T}^{\left(k)}, associated with the shape operator AA of the real hypersurface, for any nonnull real number kk ...
Pérez Juan de Dios, Pérez-López David
doaj   +2 more sources

The Viro Method for Construction of Piecewise Algebraic Hypersurfaces

open access: yesAbstract and Applied Analysis, 2013
We propose a new method to construct a real piecewise algebraic hypersurface of a given degree with a prescribed smoothness and topology. The method is based on the smooth blending theory and the Viro method for construction of Bernstein-Bézier algebraic
Yisheng Lai, Weiping Du, Renhong Wang
doaj   +1 more source

On certain real hypersurfaces of quaternionic projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
We classify certain real hypersurfaces ot a quaternionic projective space satisfying the condition σ(R(X,Y)SZ)=0.
Juan De Dios Perez, Florentino G. Santos
doaj   +1 more source

The computation of the index of a Morse function at a critical point

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
A theoretical approach in computing the index of a Morse function at a critical point on a real non-singular hypersurface V is given. As a consequence the Euler characteristic of V is computed. In the case where the hypersurface is polynomial and compact,
Takis Sakkalis
doaj   +1 more source

On ruled real hypersurfaces in a complex space form [PDF]

open access: yes, 1993
summary:We give a characterization of totally $\eta $-umbilical real hypersurfaces and ruled real hypersurfaces of a complex space form in terms of totally umbilical condition for the holomorphic distribution on real hypersurfaces.
Ahn Seong-Soo   +6 more
core   +1 more source

The Hypersurface Case [PDF]

open access: yes, 1997
In this paper we apply for the first time a new method for multivariate equation solving which was developed in for complex root determination to the real case.
Heintz, Joos   +3 more
core   +1 more source

On the Ricci tensor of real hypersurfaces of quaternionic projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
We study some conditions on the Ricci tensor of real hypersurfaces of quaternionic projective space obtaining among other results an improvement of the main theorem in [9].
Juan De Dios Perez
doaj   +1 more source

Interacting components

open access: yesTechne, 2021
Since my entrance into the architectural area at the end of the eighties of the last century and more intensively after I was appointed professor from practice at the Faculty of Architecture at the TU Delft just after the millennium shift, I have written
Kas Oosterhuis
doaj   +1 more source

On the behavior of strictly plurisubharmonic functions near real hypersurfaces [PDF]

open access: yes, 2007
We describe the behavior of certain strictly plurisubharmonic functions near some real hypersurfaces in ℂ n , n≥3. Given a hypersurface we study continuous plurisubharmonic functions which are zero on the hypersurface and have Monge–Ampère mass greater ...
Ivarsson, Björn   +2 more
core   +2 more sources

The tadpole conjecture in the interior of moduli space

open access: yesJournal of High Energy Physics, 2023
We revisit moduli stabilization on Calabi-Yau manifolds with a discrete symmetry. Invariant fluxes allow for a truncation to a symmetric locus in complex structure moduli space and hence drastically reduce the moduli stabilization problem in its ...
Severin Lüst, Max Wiesner
doaj   +1 more source

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