Results 51 to 60 of about 1,462,493 (311)
Coupled fixed point results for nonlinear integral equations
Journal of the Egyptian Mathematical Society, 2013 AbstractIn this paper, we prove some coupled coincidence point theorems for such nonlinear contraction mappings having a mixed monotone property in partially ordered metric spaces by dropping the condition of commutative. We also prove coupled common fixed point theorem for w-compatible mappings.
Poom Kumam, Wutiphol Sintunavarat
openaire +3 more sources
The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley +1 more source
Abstract and Applied Analysis, 2013 Some new existence theorems concerning approximate coincidence point property and approximate fixed point property for nonlinear maps in metric spaces without global completeness are established in this paper.
Wei-Shih Du
doaj +1 more source
Fixed point results of weakly contraction mappings in partially ordered b-metric spaces
BMC Research Notes, 2022 Objectives We explored the results of fixed point, coincidence point and coupled coincidence point for the mappings in an ordered metric spaces. Our results generalized and extended the well-known results in the literature.
K. Kalyani, N. Seshagiri Rao
doaj +1 more source
Discovering and quantifying nontrivial fixed points in multi-field models [PDF]
, 2016 We use the functional renormalization group and the $\epsilon$-expansion concertedly to explore multicritical universality classes for coupled $\bigoplus_i O(N_i)$ vector-field models in three Euclidean dimensions.
Eichhorn, Astrid +3 more
core +2 more sources
Seven Largest Couplings of the Standard Model as IR Fixed Points [PDF]
Physical Review Letters, 2019 We report on an intriguing observation that the values of all the couplings in the standard model except those related to first two generations can be understood from the IR fixed point structure of renormalization group equations in the minimal supersymmetric model extended by one complete vectorlike family with the scale of new physics in a multi-TeV
Dermíšek, Radovan, McGinnis, Navin
openaire +4 more sources
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Coupled Fixed-Point Theorems in Theta-Cone-Metric Spaces
Journal of Mathematics, 2021 This paper gives further generalizations of some well-known coupled fixed-point theorems. Specifically, Theorem 3 of the paper is the generalization of the Baskar–Lackshmikantham coupled fixed-point theorem, and Theorem 5 is the generalization of the ...
Sahar Mohamed Ali Abou Bakr
doaj +1 more source
On Some Coupled Quasi-fixed Points Theorems
Journal of Mathematical Analysis and Applications, 1996 The author discusses existence of fixed points and coupled quasi-fixed points of mixed monotone operators. Some special cases from [\textit{D. Guo} and \textit{V. Lakshmikantham}, Nonlinear problems in abstract cones, San Diego (1988; Zbl 0661.47045)] are also discussed.
openaire +3 more sources
Geographic variation in walking activity in the red flour beetle Tribolium castaneum
Population Ecology, EarlyView.This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley +1 more source