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We construct a family of 1-convex threefolds, with exceptional curve C of type (0,-2), which are not embeddable in C^m \times CP_n. In order to show that they are not Kaehler we exhibit a real 3-dimensional chain A whose boundary is the…

Complex Variables · Mathematics 2007-05-23 Giovanni Bassanelli , Marco Leoni

Cavity flow problems in two dimensions, as well as in the axially symmetric three-dimensional case, have been extensively studied in the literature from a qualitative perspective. While numerous results exist concerning minimizers or stable…

Analysis of PDEs · Mathematics 2025-09-03 Masoud Bayrami , Morteza Fotouhi , Parisa Vosooqnejad

Detailed Computational Fluid Dynamics (CFD) simulations are too computationally expensive for the real-time control and design optimization of multiphase flow reactors. To address these limitations, we introduce CLARA, a software toolbox…

While the Anomaly flow was originally motivated by string theory, its zero slope case is potentially of considerable interest in non-Kahler geometry, as it is a flow of conformally balanced metrics whose stationary points are precisely…

Differential Geometry · Mathematics 2018-05-25 Duong H. Phong , Sebastien Picard , Xiangwen Zhang

This article extends the study of the dynamical properties of the symmetric McMillan map, emphasizing its utility in understanding and modeling complex nonlinear systems. Although the map features six parameters, we demonstrate that only…

Exactly Solvable and Integrable Systems · Physics 2026-05-05 Tim Zolkin , Sergei Nagaitsev , Ivan Morozov , Sergei Kladov

A very simple nonlinear parallel nonautonomous LCR circuit with Chua's diode as its only nonlinear element, exhibiting a rich variety of dynamical features, is proposed as a variant of the simplest nonlinear nonautonomous circuit introduced…

Chaotic Dynamics · Physics 2015-06-26 K. Thamilmaran , M. Lakshmanan , K. Murali

We study the pattern of activated trajectories in a double well system without detailed balance, in the weak noise limit. The pattern may contain cusps and other singular features, which are similar to the caustics of geometrical optics.…

Statistical Mechanics · Physics 2007-05-23 Robert S. Maier , D. L. Stein

Adapting Lindstr\"om's well-known construction, we consider a wide class of functions which are generated by flows in a planar acyclic directed graph whose vertices (or edges) take weights in an arbitrary commutative semiring. We give a…

Combinatorics · Mathematics 2012-01-31 Vladimir I. Danilov , Alexander V. Karzanov , Gleb A. Koshevoy

In this paper, flows of a viscid fluids on curves are considered. Symmetry algebras and the corresponding fields of differential invariants are found. We study their dependence on thermodynamic states of media, and provide classification of…

Fluid Dynamics · Physics 2020-06-29 Anna Duyunova , Valentin Lychagin , Sergey Tychkov

We prove the cyclic sum formulas for certain two-parameter multiple series. These are new and non-trivial generalizations of the cyclic sum formulas for multiple zeta values and multiple zeta-star values.

Number Theory · Mathematics 2022-06-03 Masahiro Igarashi

We show an isomorphism stability property for Cartesian products of either flows with joining primeness property or flows which are $\alpha$-weakly mixing.

Dynamical Systems · Mathematics 2011-01-27 Joanna Kułaga

In this paper, we examine a time-dependent family of two-dimensional algebras. We investigate the conditions under which any two algebras from this family, formed at different times, are isomorphic. Our findings reveal that the flow…

Commutative Algebra · Mathematics 2024-01-22 U. A. Rozikov , M. V. Velasco , B. A. Narkuziev

We present a new method to analyze anisotropic flow from the genuine correlation among a large number of particles, focusing on the practical implementation of the method.

Nuclear Theory · Physics 2007-05-23 N. Borghini , R. S. Bhalerao , J. -Y. Ollitrault

We establish a family of parametric isoperimetric-type inequalities with multiple geometric quantities for closed convex curves. These inequalities hold under certain parameter conditions. We also prove the equality conditions. Some new…

Differential Geometry · Mathematics 2026-05-28 Heran Zhao

A one-dimensional magnetophotonic crystal with a nonlinear defect placed either symmetrically or asymmetrically inside the structure is considered. Simultaneous effects of time-reversal nonreciprocity and nonlinear spatial asymmetry in the…

Optics · Physics 2012-07-03 Vladimir R. Tuz , Sergei V. Zhukovsky , Sergey L. Prosvirnin

We study the joint variability of structural information in a hard sphere fluid biased to avoid crystallisation and form fivefold symmetric geometric motifs. We show that the structural covariance matrix approach, originally proposed for…

Disordered Systems and Neural Networks · Physics 2018-07-04 Benjamin M. G. D. Carter , Francesco Turci , Pierre Ronceray , C. Patrick Royall

We present a model for the dynamics of fluid vesicles in linear flow which consistently includes thermal fluctuations and nonlinear coupling between different modes. At the transition between tank-treading and tumbling, we predict a…

Soft Condensed Matter · Physics 2013-06-10 David Abreu , Udo Seifert

We give an overview of the existence and regularity results for curvature flows and how these flows can be used to solve some problems in geometry and physics.

Differential Geometry · Mathematics 2010-07-22 Claus Gerhardt

We give examples of rank one compact surfaces on which there exist recurrent geodesics that cannot be shadowed by periodic geodesics. We build rank one compact surfaces such that ergodic measures on the unit tangent bundle of the surface…

Dynamical Systems · Mathematics 2010-05-02 Yves Coudene , Barbara Schapira

We prove that every $C^1$ three-dimensional flow with positive topological entropy can be $C^1$ approximated by flows with homoclinic orbits. This extends a previous result for $C^1$ surface diffeomorphisms \cite{g}.

Dynamical Systems · Mathematics 2015-09-28 A. M. Lopez , R. J. Metzger , C. A. Morales