Results 51 to 60 of about 3,133,914 (352)

HOPF ALGEBRAS IN DYNAMICAL SYSTEMS THEORY [PDF]

International Journal of Geometric Methods in Modern Physics, 2007
The theory of exact and of approximate solutions for non-autonomous linear differential equations forms a wide field with strong ties to physics and applied problems. This paper is meant as a stepping stone for an exploration of this long-established theme, through the tinted glasses of a (Hopf and Rota–Baxter) algebraic point of view.
José F. Cariñena, Kurusch Ebrahimi-Fard, José M. Gracia-Bond, José M. Gracia-Bond, Héctor Figueroa   +4 more
openaire   +3 more sources

Explorando sistemas hamiltonianos: estudo analítico

Revista Brasileira de Ensino de Física
Um pêndulo duplo submetido a torques externos é usado para introduzir alguns fundamentos da teoria de Sistemas Dinâmicos para os cursos de graduação em Física, logo após o aluno ter cursado a disciplina de mecânica analítica.
G.A. Monerat, E.V. Corrêa Silva, G. Oliveira-Neto, A.R.P. de Assumpção, A.R.R. Papa   +4 more
doaj   +1 more source

Economic Circuit Theory: Electrical Network Theory for Dynamical Economic Systems

IEEE Access
In this paper, we develop what we refer to as economic circuit theory. Our purpose is to exploit the proven effectiveness of electrical circuit theory for the design, modeling, and analysis of complex electrical networks to economic systems; in ...
Coen Hutters, Max B. Mendel
doaj   +1 more source

Stability theory for hybrid dynamical systems [PDF]

Proceedings of 1995 34th IEEE Conference on Decision and Control, 1998
Dynamical systems of the hybrid type are viewed as dynamical systems on so-called time-spaces. A time-space is a metric space that is completely ordered, has a minimal element and its metric is additive. Such systems are embedded into dynamical systems defined on \(\mathbb{R}_+\) as the time axis. A stability theory is formulated.
Hui Ye, Ling Hou, A.N. Michel
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

EXTENDED DYNAMICAL SYSTEMS AND STABILITY THEORY [PDF]

Proceedings of the National Academy of Sciences, 1967
Extended dynamical systems in Banach space and use of invariance principle for stability theory of partial differential ...
Jack K. Hale, E. F. Infante
openaire   +3 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, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Introduction to Supersymmetric Theory of Stochastics

Entropy, 2016
Many natural and engineered dynamical systems, including all living objects, exhibit signatures of what can be called spontaneous dynamical long-range order (DLRO).
Igor V. Ovchinnikov
doaj   +1 more source

Deep Learning via Dynamical Systems: An Approximation Perspective [PDF]

Journal of the European Mathematical Society (Print), 2019
We build on the dynamical systems approach to deep learning, where deep residual networks are idealized as continuous-time dynamical systems, from the approximation perspective.
Qianxiao Li, Ting Lin, Zuowei Shen
semanticscholar   +1 more source