Results 31 to 40 of about 6,487 (140)

Quaternion Statistical Submanifolds and Submersions

Mathematics
This paper aims to develop a general theory of quaternion Kahlerian statistical manifolds and to study quaternion CR-statistical submanifolds in such ambient manifolds.
Aliya Naaz Siddiqui, Fatimah Alghamdi
doaj   +1 more source

On Non‐Compact Extended Bach Solitons

Mathematische Nachrichten, Volume 299, Issue 5, Page 1140-1151, May 2026.
ABSTRACT We study the characterization of non‐compact solitons of the extended Bach flow, known as an extended Bach soliton. We prove that a weakly conformally flat extended Bach soliton (Mn,g,V)$(M^n,g,V)$ with harmonic Weyl tensor is Bach‐flat and the potential vector field V$V$ is conformal.
Rahul Poddar
wiley   +1 more source

Characterizations of Trivial Ricci Solitons

, 2020
Finding characterizations of trivial solitons is an important problem in geometry of Ricci solitons. In this paper, we find several characterizations of a trivial Ricci soliton.
Hana Alsodais, Nasser Bin Turki, Sharief Deshmukh   +2 more
core   +1 more source

Socioeconomic Inequality in Malnutrition in Developing Countries [PDF]

, 2008
Epidemiological evidence points to a small set of primary causes of child mortality that are the main killers of children aged less than 5 years: pneumonia, diarrhoea, low birth weight, asphyxia and, in some parts of the world, HIV and malaria ...
Vega, J, Speybroeck, Niko, Ahmad Reza Hosseinpoor, Van de Poel, E., Hosseinpoor, AR, Vega, J. (Jeanette), Niko Speybroeck, Hosseinpoor, Ahmad Reza, Speybroeck, N, Poel, E, Van Ourti, Tom; id_orcid, Speybroeck, N. (Niko), Vega, J., Tom Van Ourti, Jeanette Vega, Ourti, T.G.M. (Tom) van, Van de Poel, Ellen, Van de Poel, E. (Ellen), Van Ourti, T., Speybroeck, N., Vega, Jeanette, Ellen Van de Poel, Hosseinpoor, A.R. (Ahmad), Hosseinpoor, A. R., Van Ourti, Tom   +24 more
core   +1 more source

Slant Submersions in Generalized Sasakian Space Forms and Some Optimal Inequalities

Axioms
This research examines key inequalities associated with the scalar and Ricci curvatures of slant submersions within generalized Sasakian space forms (GSSFs). We establish significant geometric constraints and conduct a detailed analysis of the conditions
Md Aquib
doaj   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Ricci curvature of real hypersurfaces in complex hyperbolic space [PDF]

, 2002
summary:First we prove a general algebraic lemma. By applying the algebraic lemma we establish a general inequality involving the Ricci curvature of an arbitrary real hypersurface in a complex hyperbolic space.
Chen, Bang-Yen
core  

Literacy and Land inequality in italy during Fascism. a Geographic-Historical analysis

, 2022
This study aims to shade light on the effects of land inequality on the growth of human capital in the Italian countryside during the 1930s. The initial hypothesis, according to which land inequality contributed to slowing down the process of schooling ...
Zanibelli G., Ricci V.
core   +1 more source

A note on $K$-functional, Modulus of smoothness, Jackson theorem and Nikolskii-Stechkin inequality on Damek-Ricci spaces [PDF]

, 2021
In this paper we study approximation theorems for $L^2$-space on Damek-Ricci spaces. We prove direct Jackson theorem of approximations for the modulus of smoothness defined using spherical mean operator on Damek-Ricci spaces.
Kumar, Vishvesh, Kumar, V, Ruzhansky, M, Ruzhansky, Michael   +3 more
core   +1 more source