Results 51 to 60 of about 1,701 (167)

Projective Metrizability and Formal Integrability

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
The projective metrizability problem can be formulated as follows: under what conditions the geodesics of a given spray coincide with the geodesics of some Finsler space, as oriented curves.
Ioan Bucataru, Zoltán Muzsnay
doaj   +1 more source

Rational homotopy type of projectivization of the tangent bundle of certain spaces [PDF]

open access: yesArab Journal of Mathematical Sciences
PurposeThe paper aims to determine the rational homotopy type of the total space of projectivized bundles over complex projective spaces using Sullivan minimal models, providing insights into the algebraic structure of these spaces.Design/methodology ...
Jean Baptiste Gastinzi, Meshach Ndlovu
doaj   +1 more source

Discrete gauge groups in F-theory models on genus-one fibered Calabi-Yau 4-folds without section

open access: yesJournal of High Energy Physics, 2017
We determine the discrete gauge symmetries that arise in F-theory compactifications on examples of genus-one fibered Calabi-Yau 4-folds without a section.
Yusuke Kimura
doaj   +1 more source

Some designs and codes from L_2(q) [PDF]

open access: yesTransactions on Combinatorics, 2014
For $q \in \{7,8,9,11,13,16\}$, we consider the primitive actions of $L_2(q)$ and use Key-Moori Method 1 as described in [Codes, designs and graphs from the Janko groups {$J_1$} and {$J_2$}, {\em J. Combin. Math. Combin.
Jamshid Moori   +1 more
doaj  

Heterotic instanton superpotentials from complete intersection Calabi-Yau manifolds

open access: yesJournal of High Energy Physics, 2017
We study Pfaffians that appear in non-perturbative superpotential terms arising from worldsheet instantons in heterotic theories. A result by Beasley and Witten shows that these instanton contributions cancel among curves within a given homology class ...
Evgeny Buchbinder   +3 more
doaj   +1 more source

The Comparative Project on Class Structure and Class Consciousness

open access: yesIASSIST Quarterly, 1989
The Comparative Project on Class Structure and Class ...
openaire   +2 more sources

On a generalization of I-regularity

open access: yesOpen Mathematics
Let SS be a pomonoid. The projectivity and strong flatness of right SS-posets have been central topics in the homological classification of pomonoids in recent decades. In 2005, Shi et al. introduced II-regular SS-posets and proved that all its cyclic SS-
Qiao Husheng, Feng Leting
doaj   +1 more source

(X,Y)-Gorenstein Categories, Associated (Global) Homological Dimensions and Applications to Relative Foxby Classes

open access: yesMathematics
Recently, Gorenstein dimensions relative to a semidualizing module have been the subject of numerous studies with interesting extensions of the classical homological dimensions.
Enrique Duarte   +3 more
doaj   +1 more source

The Points of Concurrence Theory in Guidobaldo del Monte’s Scenography

open access: yesDiségno, 2018
Theatrical scenography was one of the privileged applications of perspective in the Renaissance. The court theater, characteristic of those years, is structured around a frontal perspective installation developed in depth.
Leonardo Baglioni, Marta Salvatore
doaj   +2 more sources

Flag-transitive L_h.L*-geometries

open access: yesLe Matematiche, 2004
The classification of finite flag-transitive linear spaces, obtained by Buekenhout, Delandtsheer, Doyen, Kleidman, Liebeck and Saxl [20] at the end of the eighties, gave new impulse to the program of classifying various classes of locally finite flag ...
Antonio Pasini
doaj  

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