Results 31 to 40 of about 3,581,339 (338)

A Perturbation Method in Critical Point Theory and Applications [PDF]

Transactions of the American Mathematical Society, 1981
This paper is concerned with existence and multiplicity results for nonlinear elliptic equations of the type − Δ u = | u | p − 1 u + h ( x
Abbas Bahri, Henri Berestycki
openaire   +2 more sources

Phase Transition in Gauge Theories and Multiple Point Model [PDF]

, 2001
In the present paper the phase transition in the regularized U(1) gauge theory is investigated using the dual Abelian Higgs model of scalar monopoles. The corresponding renormalization group improved effective potential, analogous to the Coleman-Weinberg'
Laperashvili, L. V., Nielsen, H. B., Ryzhikh, D. A.   +2 more
core   +2 more sources

Infinitely Many Periodic Solutions to Delay Differential Equations via Critical Point Theory

Abstract and Applied Analysis, 2013
By the critical point theory, infinitely many 4σ-periodic solutions are obtained for the system of delay differential equations ẋt=-f(x(t-σ)), where σ∈(0,+∞) and f∈C(ℝn,ℝn).
Xiaosheng Zhang, Duo Wang
doaj   +1 more source

Quantum critical behavior in itinerant electron systems -- Eliashberg theory and instability of a ferromagnetic quantum-critical point [PDF]

, 2006
We consider the problem of fermions interacting with gapless long-wavelength collective bosonic modes. The theory describes, among other cases, a ferromagnetic quantum-critical point (QCP) and a QCP towards nematic ordering.
A. V. Chubukov, Andrey V. Chubukov, Catherine Pépin, D. J. Scalapino, E. C. Stoner, F. Marsiglio, G. M. Eliashberg, G. M. Eliashberg, Jérôme Rech, S. A. Brazovskii, S. A. Brazovskii, T. Moriya   +11 more
core   +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

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Periodic Solutions for Semilinear Fourth-Order Differential Inclusions via Nonsmooth Critical Point Theory

Journal of Function Spaces, 2014
Three periodic solutions with prescribed wavelength for a class of semilinear fourth-order differential inclusions are obtained by using a nonsmooth version critical point theorem. Some results of previous related literature are extended.
Bian-Xia Yang, Hong-Rui Sun
doaj   +1 more source

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

Note on New Massive Gravity in $AdS_3$

, 2009
In this note we study the properties of linearized gravitational excitations in the new massive gravity theory in asymptotically $AdS_3$ spacetime and find that there is also a critical point for the mass parameter at which massive gravitons become ...
A. Maloney, A. Maloney, A. Strominger, C.W. Misner, D. Anninos, D. Gaiotto, D. Gaiotto, D. Grumiller, D. Grumiller, E. Witten, E. Witten, E.A. Bergshoeff, G. Clement, G. Compere, G. Giribet, G.W. Gibbons, I.L. Buchbinder, J. Manschot, J. Manschot, J.M. Maldacena, K. Hotta, M. Blagojevic, M. Henneaux, M. Nakasone, M.-i. Park, M.-I. Park, M.R. Gaberdiel, P. Kraus, S. Carlip, S. Carlip, S. Giombi, S.D. Avramis, W. Li, W. Li, X. Yin, X. Yin, Ya-Wen Sun, Yan Liu   +37 more
core   +1 more source

FoxO1 signaling in B cell malignancies and its therapeutic targeting

FEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac, Petra Pavelkova, Laura Ondrisova, Marek Mraz   +3 more
wiley   +1 more source