Found 3,639 Documents (Results 1–100)
Minimal number of periodic orbits for non-singular Morse-Smale flows in odd dimension. (English) Zbl 07929229
Complete resolution of the circulant nut graph order-degree existence problem. (English) Zbl 07926862
Monotonicity of the ratios of two abelian integrals for Hamiltonian systems with parameters. (English) Zbl 07924330
The first three order Melnikov functions for general piecewise Hamiltonian systems with a non-regular separation line. (English) Zbl 07924006
Corrigendum to: “A flow box theorem for 2d slow-fast vector fields and diffeomorphisms and the slow log-determinant integral”. (English) Zbl 07923508
On the existence of hyperbolic algebraic limit cycles for a family of polynomial differential systems. (English) Zbl 07923088
An exactly solvable planar differential system of degree six with an explicit algebraic limit cycle. (English) Zbl 07923069
Rough Hardy-Littlewood operators on \(p\)-adic function spaces with variable exponents. (English) Zbl 07918279
At most five limit cycles in a class of discontinuous piecewise linear systems with three zones. (English) Zbl 07916720
Studying the upper bounds of the numbers of zeros of abelian integrals by the law of polynomials. (English) Zbl 07916706
The discontinuous planar piecewise linear systems with two improper nodes have at most one limit cycle. (English) Zbl 07916238
Singularities of holomorphic vector fields in dimensions \(\geq 3\): results and problems. (English) Zbl 07912997
Cano, Felipe (ed.) et al., Handbook of geometry and topology of singularities VI: foliations. Cham: Springer. 39-99 (2024).
Signless Laplacian spectrum of the cozero-divisor graph of the commutative ring \(\mathbb{Z}_n\). (English) Zbl 07912321
Family of quadratic differential systems with invariant parabolas: a complete classification in the space \({\mathbb{R}}^{12}\). (English) Zbl 07911182
Solution of the center problem for a class of polynomial differential systems. (English) Zbl 07904904
Global phase portraits of generalized polynomial Liénard system with a unique equilibrium and a periodic annulus. (English) Zbl 07903386
The absolute values of the perfect matching derangement graph’s eigenvalues almost follow the lexicographic order of partitions. (English) Zbl 07898307
A polynomial system of degree four with an invariant square containing at least five limit cycles. (English) Zbl 07896483
Matrices and Galois theory. (English) Zbl 07889452
On the number of limit cycles in piecewise planar quadratic differential systems. (English) Zbl 07885659
Reviewer: Hongwei Shi (Zhuhai)
Phase portraits of a class of cubic systems with an ellipse and a straight line as invariant algebraic curves. (English) Zbl 07878132
The monotonicity of the ratio of two line integrals in piecewise smooth differential systems. (English) Zbl 07878128
Cyclicity of the limit periodic sets for a singularly perturbed Leslie-Gower predator-prey model with prey harvesting. (English) Zbl 07876093
Small amplitude periodic orbits in three-dimensional quadratic vector fields with a zero-Hopf singularity. (English) Zbl 07876079
Twin quadratic polynomial vector fields in the space \(\mathbb{C}^3\). (English) Zbl 07875573
Reviewer: Maite Grau (Lleida)
Limit cycles bifurcated from piecewise Hamiltonian systems by Melnikov functions of any order. (English) Zbl 07873551
Spectral norm and von Neumann type trace inequality for dual quaternion matrices. (English) Zbl 1542.15028
Homoclinic and heteroclinic bifurcations in piecewise smooth systems via stability-changing method. (English) Zbl 07872440
The maximum number of small-amplitude limit cycles in Liénard-type systems with cubic restoring terms. (English) Zbl 07871728
Bifurcation theory of limit cycles by higher order Melnikov functions and applications. (English) Zbl 07869051
On the number of limit cycles coming from a uniform isochronous center with continuous and discontinuous quartic perturbations. (English) Zbl 07867609
1-dimensional flow arrays and bifurcations in planar polynomial systems (to appear). (English) Zbl 07863732
Beijing: Higher Education Press; Singapore: Springer (ISBN 978-981-97-2203-7/hbk; 978-981-97-2206-8/pbk). (2024).
A decomposition theorem for \(\mathbb{Q}\)-Fano Kähler-Einstein varieties. (Un théorème de décomposition pour les variétés \(\mathbb{Q}\)-Fano qui admettent une métrique de Kähler-Einstein.) (English. French summary) Zbl 07863256
Reviewer: João Paulo Figueredo (São Paulo)
Global analysis of Riccati quadratic differential systems. (English) Zbl 1543.34022
Reviewer: Mikhail Kuptsov (Ryazan)
Characterization of the Riccati and Abel polynomial differential systems having invariant algebraic curves. (English) Zbl 07848366
Limit cycles of the discontinuous piecewise differential systems separated by a nonregular line and formed by a linear center and a quadratic one. (English) Zbl 07848358
Crossing limit cycles in planar piecewise linear systems separated by a nonregular line with node-node type critical points. (English) Zbl 07848347
Global phase portraits of piecewise quadratic differential systems with a pseudo-center. (English) Zbl 07848330
Four limit cycles of three-dimensional discontinuous piecewise differential systems having a sphere as switching manifold. (English) Zbl 07848328
Sombor index and Sombor spectrum of cozero-divisor graph of \(\mathbb{Z}_n\). (English) Zbl 1536.05139
Limit cycles bifurcating of discontinuous and continuous piecewise differential systems of isochronous cubic centers with three zones. (English) Zbl 07845335
Topological classifications of a piecewise linear Liénard system with three zones. (English) Zbl 07845257
Reviewer: Zhengdong Du (Chengdu)
Limit cycles in discontinuous planar piecewise differential systems with multiple nonlinear switching curves. (English) Zbl 07843972
Reviewer: Adriana Buică (Cluj-Napoca)
Application of the Cartier operator in coding theory. (English) Zbl 1540.94094
Reviewer: Sami Omar (Sukhair)
The relative class number one problem for function fields. III. (English) Zbl 07840408
Cremona, John (ed.) et al., LuCaNT: LMFDB, computation, and number theory. Conference, Institute for Computational and Experimental Research in Mathematics (ICERM), Providence, Rhode Island, USA, July 10–14, 2023. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 796, 55-73 (2024).
The linear term of the Poincaré map at singularities of planar vector fields. (English) Zbl 07839394
Pseudo-abelian integrals and divergence integrals on slow-fast model system. (English) Zbl 1541.34054
Reviewer: Maite Grau (Lleida)
Distinct eigenvalues of the transposition graph. (English) Zbl 07835162
Reviewer: Harishchandra Ramane (Dharwad)
The number of limit cycles of a kind of piecewise quadratic systems with switching curve \(y = x^m\). (English) Zbl 1541.34055
Reviewer: Maite Grau (Lleida)
Invariant circles and phase portraits of cubic vector fields on the sphere. (English) Zbl 07826246
Reviewer: Paulo Santana (São José do Rio Preto)
Hilbert number for a family of piecewise nonautonomous equations. (English) Zbl 1540.34044
Reviewer: Alexander Grin (Grodno)
The adjacency spectra of some families of minimally connected prime graphs. (English) Zbl 1535.05131
Reviewer: Brahadeesh Sankarnarayanan (Mumbai)
Limit cycles near a centre and a heteroclinic loop in a near-Hamiltonian differential system. (English) Zbl 07818465
Reviewer: Jihua Yang (Guyuan)
Nine limit cycles around a weak focus in a class of three-dimensional cubic Kukles systems. (English) Zbl 1540.34073
Reviewer: Alexander Grin (Grodno)
The application of Liénard transformations to predator-prey systems. (English) Zbl 1539.34030
Reviewer: Lucyjane Silva (Goiânia)
The limit cycle bifurcations of a whirling pendulum with piecewise smooth perturbations. (English) Zbl 07815387
Vacuum energy of scalar fields on spherical shells with general matching conditions. (English) Zbl 1542.81014
Plane polynomials and Hamiltonian vector fields determined by their singular points. (English) Zbl 07812549
Stratified vector bundles: examples and constructions. (English) Zbl 1539.58002
Reviewer: Iakovos Androulidakis (Athína)
Schmidt rank and singularities. (English) Zbl 07812309
Ukr. Math. J. 75, No. 9, 1420-1442 (2024); and Ukr. Mat. Zh. 75, No. 9, 1248-1266 (2023).
Reviewer: Pasha Zusmanovich (Ostrava)
On structural stability of evolutionary stable strategies. (English) Zbl 1542.34046
Reviewer: Vladimir Răsvan (Craiova)
Singular foliations through diffeology. (English) Zbl 1540.57038
Magnot, Jean-Pierre (ed.), Recent advances in diffeologies and their applications. AMS-EMS-SMF special session, Université de Grenoble-Alpes, Grenoble, France, July 18–20, 2022. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 794, 139-160 (2024).
Reviewer: Paweł Walczak (Łódź)
Regularity of the leafwise Poincaré metric on singular holomorphic foliations. (English) Zbl 1537.32067
The limit cycles of discontinuous piecewise linear differential systems formed by centers and separated by irreducible cubic curves. II. (English) Zbl 1535.34021
Reviewer: Paulo Santana (São José do Rio Preto)
The integrality of distance spectra of quasiabelian 2-Cayley graphs. (English) Zbl 1536.05243
Reviewer: Joy Morris (Lethbridge)
Cyclicity of rigid centres on centre manifolds of three-dimensional systems. (English) Zbl 1543.34031
Reviewer: Majid Gazor (Isfahan)
Limit cycles of differential equations. 2nd edition. (English) Zbl 1531.34002
Advanced Courses in Mathematics – CRM Barcelona. Cham: Birkhäuser (ISBN 978-3-030-59655-2/pbk; 978-3-030-59656-9/ebook). ix, 238 p. (2024).
Non-autonomous inverse Jacobi multipliers and periodic orbits of planar vector fields. (English) Zbl 1536.34030
Reviewer: Adriana Buică (Cluj-Napoca)
MSC:
34C05
Integrability of matrices. (English) Zbl 1531.15013
Perturbation of a piecewise regular-singular Liénard system. (English) Zbl 1535.34022
Reviewer: Zhengdong Du (Chengdu)
On the number of limit cycles near a homoclinic loop with a nilpotent cusp of order \(m\). (English) Zbl 1536.34034
Reviewer: Maite Grau (Lleida)
Stability of singular limit cycles for Abel equations revisited. (English) Zbl 1540.34067
Reviewer: Alexander Grin (Grodno)
Generic Gröbner basis of a parametric ideal and its application to a comprehensive Gröbner system. (English) Zbl 1530.13045
Reviewer: Amir Hashemi (Isfahan)
On the GIT-stability of foliations of degree 3 with a unique singular point. (English) Zbl 1537.32066
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