Results 41 to 50 of about 290 (118)
, 2013 This work has as main goal the development, implementation and analysis of an instructional sequence designed to promote learning sketch graphs of functions that differ by isometries of certain functions and homotheties aimed at students of the second ...
Santos, Anayara Gomes dos
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Negativity‐preserving transforms of tuples of symmetric matrices
Proceedings of the London Mathematical Society, Volume 132, Issue 4, April 2026.Abstract Compared to the entrywise transforms which preserve positive semidefiniteness, those leaving invariant the inertia of symmetric matrices reveal a surprising rigidity. We first obtain the classification of negativity preservers by combining recent advances in matrix analysis with some novel arguments relying on well‐chosen test matrices, Sidon ...
Alexander Belton +3 more
wiley +1 more source
, 2005 We study Dupin hypersurfaces in ℝ5 parametrized by lines of curvature, with four distinct principal curvatures. We characterize locally a generic family of such hypersurfaces in terms of the principal curvatures and four vector valued functions of one ...
Keti Tenenblat, Carlos M.C. Riveros
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Mathematical Methods in the Applied Sciences, Volume 49, Issue 4, Page 3353-3384, 15 March 2026.ABSTRACT The article examines a boundary‐value problem in a bounded domain Ωε$$ {\Omega}_{\varepsilon } $$ consisting of perforated and imperforate regions, with Neumann conditions prescribed at the boundaries of the perforations. Assuming the porous medium has symmetric, periodic structure with a small period ε$$ \varepsilon $$, we analyze the limit ...
Taras Melnyk
wiley +1 more source
First and second sharp constants in Riemannian Gagliardo–Nirenberg inequalities
Mathematische Nachrichten, Volume 299, Issue 3, Page 617-636, March 2026.Abstract Let (M,g)$(M,g)$ be a smooth compact Riemannian manifold of dimension n≥2$n\ge 2$, 1
Jurandir Ceccon +2 more
wiley +1 more source
Borne uniforme pour les homothéties dans lʼimage de Galois associée aux courbes elliptiques [PDF]
, 2011 Let K be a fixed number field and GK its absolute Galois group. We give a bound C(K), depending only on the degree, the class number and the discriminant of K, such that for any elliptic curve E defined over K and any prime number p strictly larger than ...
David, Agnès, Agnès David
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Plank theorems and their applications: A survey
Bulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.Abstract Plank problems concern the covering of convex bodies by planks in Euclidean space and are related to famous open problems in convex geometry. In this survey, we introduce plank problems and present surprising applications of plank theorems in various areas of mathematics.
William Verreault
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Regular quantizations and covering maps
, 2006 Let \tilde M-->M be a holomorphic (unbranched) covering map between two compact complex manifolds, with b_2(\tilde M)=1. We prove that if \tilde M and M both admit regular Kaehler forms \tilde\omega and \omega respectively then, up to ...
LOI, ANDREA
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A classification of Minkowski planes over half-ordered fields [PDF]
, 1999 This paper concerns a construction of Minkowski planes over half-ordered fields [5] and [20]. Solving various functional equations the Klein-Kroll types of these Minkowski planes are determined with respect to G- and q-translations and (p, q ...
Steinke, Günter F.
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Inequalities and counterexamples for functional intrinsic volumes and beyond
Journal of the London Mathematical Society, Volume 113, Issue 1, January 2026.Abstract We show that analytic analogs of Brunn–Minkowski‐type inequalities fail for functional intrinsic volumes on convex functions. This is demonstrated both through counterexamples and by connecting the problem to results of Colesanti, Hug, and Saorín Gómez.
Fabian Mussnig, Jacopo Ulivelli
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