Results 21 to 30 of about 118,453 (329)

Quantum description of angles in the plane

open access: yesActa Polytechnica, 2022
The real plane with its set of orientations or angles in [0, π) is the simplest non trivial example of a (projective) Hilbert space and provides nice illustrations of quantum formalism.
Roberto Beneduci   +2 more
doaj   +1 more source

A 3-Manifold with no Real Projective Structure [PDF]

open access: yes, 2015
We show that the connected sum of two copies of real projective 3-space does not admit a real projective structure. This is the first known example of a connected 3-manifold without a real projective structure.Comment: Minor corrections suggested by ...
Cooper, Daryl, Goldman, William
core   +2 more sources

Real hypersurfaces of type A in quarternionic projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this paper, under certain conditions on the orthogonal distribution 𝒟, we give a characterization of real hypersurfaces of type A in quaternionic projective space QPm.
U-Hang Ki   +2 more
doaj   +1 more source

Holography for N $$ \mathcal{N} $$ = 4 on RP $$ \mathbbm{RP} $$ 4

open access: yesJournal of High Energy Physics, 2023
We propose a holographic description of N $$ \mathcal{N} $$ = 4 super Yang-Mills on the four-dimensional real projective space RP $$ \mathbbm{RP} $$ 4.
João Caetano, Leonardo Rastelli
doaj   +1 more source

Chirality of Real Non-singular Cubic Fourfolds and Their Pure Deformation Classification [PDF]

open access: yes, 2019
In our previous works we have classified real non-singular cubic hypersurfaces in the 5-dimensional projective space up to equivalence that includes both real projective transformations and continuous variations of coefficients preserving the ...
Finashin, Sergey, Kharlamov, Viatcheslav
core   +4 more sources

Noncommutative Instantons and Twistor Transform [PDF]

open access: yes, 2000
Recently N.Nekrasov and A.Schwarz proposed a modification of the ADHM construction of instantons which produces instantons on a noncommutative deformation of the 4-dimensional real affine space.
Kapustin, Anton   +2 more
core   +2 more sources

q-deformed rational numbers and the 2-Calabi–Yau category of type $A_{2}$

open access: yesForum of Mathematics, Sigma, 2023
We describe a family of compactifications of the space of Bridgeland stability conditions of a triangulated category, following earlier work by Bapat, Deopurkar and Licata. We particularly consider the case of the 2-Calabi–Yau category of the $A_2$
Asilata Bapat   +2 more
doaj   +1 more source

Quantum Real Projective Space, Disc and Spheres

open access: yesAlgebras and Representation Theory, 2003
We define the $C^*$-algebra of quantum real projective space $\R P_q^2$, classify its irreducible representations and compute its $K$-theory. We also show that the $q$-disc of Klimek-Lesniewski can be obtained as a non-Galois $\Z_2$-quotient of the equator Podle quantum sphere.
Hajac, Piotr M.   +2 more
openaire   +3 more sources

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

Relativistic Localizing Processes Bespeak an Inevitable Projective Geometry of Spacetime

open access: yesAdvances in High Energy Physics, 2017
Surprisingly, the issue of events localization in spacetime is poorly understood and a fortiori realized even in the context of Einstein’s relativity.
Jacques L. Rubin
doaj   +1 more source

Home - About - Disclaimer - Privacy