Mostrando ítems 21-40 de 656

    Thumbnail

    Local nearby bifurcations lead to synergies in critical slowing down: The case of mushroom bifurcations 

    Fucho-Rius, M.; Maretvadakethope, S.; Haro, A.; Alarcón Cor, T.; Sardanyes, J.; Pérez-Carrasco, R. (2025-02-28)

    The behavior of nonlinear systems near critical transitions has significant implications for stability, transients, and resilience in complex systems. Transient times, τ, become extremely long near phase transitions (or ...

    Thumbnail

    A practical aerodynamic model for dynamic textile manipulation in robotics 

    Coltraro, F.; Amorós, J.; Torras, C.; Alberich-Carramiñana, M. (2025-06-01)

    We study an aerodynamic model describing the interaction between cloth and air, with applications to dynamic textile manipulation by robots. After introducing the model, we investigate its theoretical implications by using ...

    Thumbnail

    Boundary behaviour of universal covering maps 

    R. Ferreira, G.; Jové, A. (2025-05-01)

    Let Ω⊂Cˆ be a multiply connected domain, and let π:D→Ω be a universal covering map. In this paper, we analyze the boundary behaviour of π, describing the interplay between radial limits and angular cluster sets, the ...

    Thumbnail

    On small breathers of nonlinear Klein-Gordon equations via exponentially small homoclinic splitting 

    Gomide, O. M. L.; Guardi, M.; Seara, T. M.; Zeng, C. (2025-02-20)

    Breathers are nontrivial time-periodic and spatially localized solutions of nonlinear dispersive partial differential equations (PDEs). Families of breathers have been found for certain integrable PDEs but are believed to ...

    Thumbnail

    Mitochondrial priming and response to BH3 mimetics in “one-two punch” senogenic-senolytic strategies 

    López, J.; Llop-Hernández, À.; Verdura, S.; Serrano-Hervás, E.; Martinez-Balibrea, E.; Bosch-Barrera, J.; López-Bonet, E.; Martin-Castillo, B.; Sardanes, JOSEP; Alarcón Cor, Tomás; Lupu, R.; Cuyàs, E.; Menendez, J. A. (2025-03-07)

    A one-two punch sequential regimen of senescence-inducing agents followed by senolytic drugs has emerged as a novel therapeutic strategy in cancer. Unfortunately, cancer cells undergoing therapy-induced senescence (TIS) ...

    Thumbnail

    Oscillatory Motions, Parabolic Orbits and Collision Orbits in the Planar Circular Restricted Three-Body Problem 

    Lamas, J.; Guardia, M.; Sea, T. M. (2025-04-10)

    In this paper we consider the planar circular restricted three body problem (PCRTBP), which models the motion of a massless body under the attraction of other two bodies, the primaries, which describe circular orbits around ...

    Thumbnail

    Mathematical modelling of flow and adsorption in a gas chromatograph 

    Cabrera-Codony, A.; Valverde, A.; Born, K.; Noreldin, O. A. I.; Myers, Timothy (2025-03-01)

    In this paper, a mathematical model is developed to describe the evolution of the concentration of compounds through a gas chromatography column. The model couples mass balances and kinetic equations for all components. ...

    Thumbnail

    Resource-consumer dynamics in drylands: Modeling the role of plant–plant facilitation–competition shifts with a piecewise system 

    da Cruz, L. P. C.; Torregrosa, J.; Berdugo, M.; Sardanyes, J. (2025-03-01)

    In drylands, water availability determines plant population densities and whether they cooperate via facilitation or compete. When water scarcity intensifies, plant densities decrease and competition for water surpasses ...

    Thumbnail

    Sampling discretization in Orlicz spaces 

    Kosov, Egor; Tikhonov, S. (2025-10-01)

    We obtain new sampling discretization results in Orlicz norms on finite dimensional spaces. As applications, we study sampling recovery problems, where the error of the recovery process is calculated with respect to different ...

    Thumbnail

    Stability of the Concentration Inequality on Polynomials 

    García-Ferrero, María Ángeles; Ortega Cerdá, Joaquim (2025-04-21)

    In this paper, we study the stability of the concentration inequality for one-dimensional complex polynomials. We provide the stability of the local concentration inequality and a global version using a Wehrl-type entropy.

    Thumbnail

    Network Mechanisms Underlying the Regional Diversity of Variance and Time Scales of the Brain’s Spontaneous Activity Fluctuations 

    Ponce Álvarez, Adrián Fernando (2025-03-05)

    The brain’s activity fluctuations have different temporal scales across the brain regions, with associative regions displaying slower timescales than sensory areas. This hierarchy of timescales has been shown to correlate ...

    Thumbnail

    Hydrodynamic and symbolic models of computation with advice 

    Cardona, R. (2024-11-11)

    Dynamical systems and physical models defined on idealized continuous phase spaces are known to exhibit non-computable phenomena; examples include the wave equation, recurrent neural networks, or Julia sets in holomorphic ...

    Thumbnail

    Hochschild polytopes 

    Pilaud, Vincent; Poliakova, D. (2025-04-21)

    The (m, n)-multiplihedron is a polytope whose faces correspond to m-painted n-trees, and whose oriented skeleton is the Hasse diagram of the rotation lattice on binary m-painted n-trees. Deleting certain inequalities from ...

    Thumbnail

    A Mathematical Exploration of SDH-b Loss in Chromaffin Cells 

    Vera-Sigüenza, E.; Rana, H.; Nashebi, R.; Cloete, Ielyaas; Kl’uvčková, K.; Tennant, D. A. (2025-03-13)

    The succinate dehydrogenase (SDH) is a four-subunit enzyme complex (SDH-a, SDH-b, SDH-c, and SDH-d) central to cell carbon metabolism. The SDH bridges the tricarboxylic acid cycle to the electron transport chain. A ...

    Thumbnail

    Periodic orbits and Birkhoff sections of stable Hamiltonian structures 

    Cardona, R.; Rechtman, A. (2025-02-18)

    Stable Hamiltonian structures generalize contact forms and define a volumepreserving vector field known as the Reeb vector field. We study two aspects of Reeb vector fields defined by stable Hamiltonian structures on ...

    Thumbnail

    On the cyclicity of hyperbolic polycycles 

    Buzzi, C.; Gasull Embid, Armengol; Santana, P. (2025-06-25)

    Let X be a planar smooth vector field with a polycycle Γn with n sides and all its corners, that are at most n singularities, being hyperbolic saddles. In this paper we study the cyclicity of Γn in terms of the hyperbolicity ...

    Thumbnail

    An analytical model for column adsorption with two competing contaminants 

    Calvo Schwarzwälder, Marc; Myers, Timothy; Cabrera-Codony, A.; Valverde, A. (2025-08-01)

    We develop a mathematical model to describe an adsorption process where two contaminants are simultaneously removed from a fluid mixture as it flows through a packed column. Both species compete to occupy the available ...

    Thumbnail

    Understanding How Chromatin Folding and Enzyme Competition Affect Rugged Epigenetic Landscapes 

    Stepanova, Daria; Brunet Guasch, Xell; Byrne, H. M.; Alarcón Cor, Tomás (2025-03-28)

    Epigenetics plays a key role in cellular differentiation and maintaining cell identity, enabling cells to regulate their genetic activity without altering the DNA sequence. Epigenetic regulation occurs within the context ...

    Thumbnail

    Pitt-Type Inquality For p>q With GM-Condition 

    Tokmagambetov, Niyaz (2025-05-05)

    In this paper, we examine the results of the Pitt type for the Fourier transform, specifically focusing on scenarios where the parameter p is greater than q. Here, we show that for the Pitt inequality the ’if and only if’ ...

    Thumbnail

    Pitt-Type Inequalities For General Monotone Functions 

    Tokmagambetov, Niyaz (2025-03-26)

    In this paper, we study Pitt-type results for the Fourier transform. A new class of general monotone functions is introduced as a subclass of BV functions, and basic properties are established. It is shown that GM(R; τ, ...