Results 51 to 60 of about 5,202 (129)
Genre et école maternelle : l’exemple des interactions dans les séances de mathématiques
Canadian Journal of EducationL’école maternelle comporte des spécificités par rapport à l’école élémentaire, notamment, la place centrale accordée à la socialisation des élèves, la présence en classe d’un acteur ou d’une actrice supplémentaire, et des méthodes d’apprentissage ...
Dylan Racana
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Annales de Didactique et de Sciences Cognitives, 2015 It seems obvious that teacher educators should themselves be trained. Nevertheless, rare are research studies that consider this issue. In this paper we trace the history and present the theoretical background of a university program for training ...
Maha Abboud-Blanchard, Aline Robert
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A Conditional Tail Expectation Type Risk Measure for Time Series
Journal of Time Series Analysis, Volume 47, Issue 5, Page 967-983, September 2026.ABSTRACT We consider the estimation of the conditional expectation 𝔼(Xh|X0>UX(1/p)), provided 𝔼|X0|<∞, at extreme levels, where (Xt)t∈ℤ$$ {\left({X}_t\right)}_{t\in \mathbb{Z}} $$ is a strictly stationary time series, UX$$ {U}_X $$ its tail quantile function, h$$ h $$ is a positive integer and p∈(0,1)$$ p\in \left(0,1\right) $$ is such that p→0$$ p\to ...
Yuri Goegebeur +2 more
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Refinements on higher order Weil–Oesterlé bounds via a Serre type argument
Bulletin of the London Mathematical Society, Volume 58, Issue 9, September 2026.Abstract Weil's theorem gives the most standard bound on the maximum number of points Nq(g)$N_q(g)$ of a curve of genus g$g$ over a finite field Fq$\mathbb {F}_q$. This bound was improved by Ihara and Oesterlé for larger genus. A recent point of view allows one to recover these bounds by solving a sequence of semi‐definite programs, and the first two ...
Emmanuel Hallouin +2 more
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A proof of Esterle's conjecture on negative powers of Hilbert‐space contractions
Bulletin of the London Mathematical Society, Volume 58, Issue 9, September 2026.Abstract We establish the following result, confirming a conjecture of Jean Esterle. For each closed subset E$E$ of the unit circle of Lebesgue measure zero, there exists a positive sequence un→∞$u_n\rightarrow \infty$ with the following property: If T$T$ is a contraction on a Hilbert space such that σ(T)⊂E$\sigma (T)\subset E$ and ∥T−n∥=O(un)$\Vert T^{
Thomas Ransford
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Journal of the London Mathematical Society, Volume 114, Issue 3, September 2026.Abstract The tropical n$n$‐gonal construction was introduced in recent work by the first author and D. Zakharov and structural results for n=2,3$n = 2,3$ were established. In this paper, we explore the construction for n=4$n = 4$ and prove a tropical analogue of Donagi's theorem which states that the tetragonal construction is a triality which ...
Felix Röhrle, Thomas Saillez
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Schweizerische Zeitschrift für Bildungswissenschaften, 2018 Mettant à leur agenda l’étude des diverses pratiques mathématiques d’un temps, les historiens se sont intéressés aux mécanismes de circulation – partie prenante de l’étude du processus de production des mathématiques lui-même –, dont l’enseignement est ...
Hélène Gispert
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Factorizations in Hecke algebras I: Long‐cycle factorizations and Jucys–Murphy elements
Journal of the London Mathematical Society, Volume 114, Issue 3, September 2026.Abstract Given a permutation, there is a well‐developed literature studying the number of ways one can factor it into a product of other permutations subject to certain conditions. We initiate the analogous theory for the type‐A$A$ Iwahori–Hecke algebra by generalizing the notion of factorization in terms of the Jucys–Murphy elements.
Jose Bastidas +5 more
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Canadian Journal of Education, 2010 Teachers’ understanding of the elementary school mathematics curriculum forms part, but not all, of the newly emerged field of mathematics for teaching, a term that describes the specialised mathematics knowledge of teachers. Pre‐service teachers from a
Ann Kajander
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Pinwheels in symplectic rational and ruled surfaces and non‐squeezing of rational homology balls
Journal of Topology, Volume 19, Issue 3, September 2026.Abstract We use almost toric fibrations and the symplectic rational blow‐up to determine when certain Lagrangian pinwheels, which we call liminal, embed in symplectic rational and ruled surfaces. The case of L2,1$L_{2,1}$‐pinwheels, namely Lagrangian RP2s$\mathbb {R}P^2{\rm s}$, answers a question of Kronheimer in the negative, exhibiting a symplectic ...
Nikolas Adaloglou, Johannes Hauber
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