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See detailSymbolisation and objectification through social interactions for meaningful learning of mathematics
Vlassis, Joëlle UL; Demonty, Isabelle

in Proceedings of the 42nd Conference of the International Group for the Psychology of Mathematics Education (2018)

Detailed reference viewed: 39 (5 UL)
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See detailSymboliser et conceptualiser, une dialectique intrinsèque aux mathématiques et à leur apprentissage
Vlassis, Joëlle UL; Fagnant, Annick; Demonty, Isabelle UL

in Psychologie des apprentissages scolaires (2015)

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See detailSymbolizing and modeling to promote a flexible use of the minus sign in algebraic operations
Vlassis, Joëlle UL

in Jarmila, Novotná (Ed.) Proceedings of the 30th International Conference for the Psychology of Mathematics Education (2006)

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See detailSymmetric approximations of pseudo-Boolean functions with applications to influence indexes
Marichal, Jean-Luc UL; Mathonet, Pierre UL

in Applied Mathematics Letters (2012), 25(8), 1121-1126

We introduce an index for measuring the influence of the $k$th smallest variable on a pseudo-Boolean function. This index is defined from a weighted least squares approximation of the function by linear ... [more ▼]

We introduce an index for measuring the influence of the $k$th smallest variable on a pseudo-Boolean function. This index is defined from a weighted least squares approximation of the function by linear combinations of order statistic functions. We give explicit expressions for both the index and the approximation and discuss some properties of the index. Finally, we show that this index subsumes the concept of system signature in engineering reliability and that of cardinality index in decision making. [less ▲]

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See detailSymmetric n-ary superalgebras with skew-symmetric invariant forms
Vishnyakova, Elizaveta UL

E-print/Working paper (2014)

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See detailSymmetrien in der Natur. Was sagt uns die Mathematik hierzu
Schlichenmaier, Martin UL

Conference given outside the academic context (2009)

Objekte in der Natur haben meist Formen und Strukturen, die sich durch gewisse Regelmäßigkeiten auszeichnen. Dafür verwendet man oft den vagen Begriff der Symmetrie. Symmetrische Formen werden meist als ... [more ▼]

Objekte in der Natur haben meist Formen und Strukturen, die sich durch gewisse Regelmäßigkeiten auszeichnen. Dafür verwendet man oft den vagen Begriff der Symmetrie. Symmetrische Formen werden meist als schön empfunden. Im Vortrag möchte ich erläutern, wie man den Begriff der Symmetrie mathematisch exakt erfassen kann. An Beispielen möchte ich zeigen, dass bereits einige einfache Annahmen gewisse Formen erzwingen. Aber nicht nur bei der Herausbildung von Formen spielt die Symmetrie eine Rolle. Sie ist ebenfalls ein wichtige Erkenntnismethode in der modernen Theoretischen Physik. [less ▲]

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See detailSymmetries and infinite dimensional Lie algebras
Schlichenmaier, Martin UL

in Bartholmé, C.; Connor, T.; Dominicy, Y. (Eds.) et al Notes de la cinquième BSSM (2013)

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See detailSymmetry Lie algebra of the two body systems with a Dirac oscillator interaction
del Sol Mesa, Antonio UL

in Revista Mexicana de Física (1995)

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See detailSympathetic activity relates to adenosine A2A receptor gene variation in blood-injury phobia
Hohoff, Christa; Domschke, Katharina; Schwarte, Kathrin et al

in Journal of Neural Transmission (2009), 116

Variation in the candidate genes adenosine A(2A) receptor (A(2A)R), catechol-O-methyl-transferase (COMT), and norepinephrine transporter (NET) has been suggested to influence vulnerability to panic ... [more ▼]

Variation in the candidate genes adenosine A(2A) receptor (A(2A)R), catechol-O-methyl-transferase (COMT), and norepinephrine transporter (NET) has been suggested to influence vulnerability to panic disorder. We therefore investigated patients with another anxiety disorder with an even higher heritability, the blood-injury phobia, for association of these variants and used sympathetic measures during venipuncture, which serve as a naturalistic trigger of anxiety and autonomic hyperarousal, as an intermediate phenotype of anxiety. Patients homozygous for the A(2A)R 1976T allele as compared to patients carrying at least one 1976C allele exhibited a significantly increased respiratory rate with a trend towards elevated measures of systolic and diastolic blood pressure and respiratory minute volume. None of the sympathetic measures were influenced by the COMT or NET polymorphisms.This study provides preliminary data suggesting an influence of the A(2A)R 1976C/T polymorphism on sympathetic psychophysiological indicators of anxiety-related arousal in blood-injury phobia and thereby further supports a role of the A(2A)R gene in the pathogenesis of anxiety disorders. [less ▲]

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See detailSymplectic Dirac operators: Construction and kernels
La Fuente-Gravy, Laurent UL

Presentation (2018, July 04)

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See detailSymplectic Galois representations and applications to the inverse Galois problem
Wiese, Gabor UL

Presentation (2013, April 19)

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See detailSymplectic Galois representations and applications to the inverse Galois problem
Wiese, Gabor UL

Presentation (2012, May 30)

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See detailSymplectic Galois representations and applications to the inverse Galois problem
Wiese, Gabor UL

Presentation (2012, January 19)

Detailed reference viewed: 24 (0 UL)
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See detailA symplectic map between hyperbolic and complex Teichmüller theory
Krasnov, Kirill; Schlenker, Jean-Marc UL

in Duke Mathematical Journal (2009), 150(2), 331--356

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See detailSymplectic symmetric space realized as co-adjoint orbit
Korvers, Stéphane UL

Presentation (2013, March)

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See detailSymplectic Wick rotations between moduli spaces of 3-manifolds
scarinci, carlos; Schlenker, Jean-Marc UL

in Scuola Normale Superiore di Pisa. Annali. Classe di Scienze (2014)

Given a closed hyperbolic surface $S$, let $\cQF$ denote the space of quasifuchsian hyperbolic metrics on $S\times\R$ and $\cGH_{-1}$ the space of maximal globally hyperbolic anti-de Sitter metrics on $S ... [more ▼]

Given a closed hyperbolic surface $S$, let $\cQF$ denote the space of quasifuchsian hyperbolic metrics on $S\times\R$ and $\cGH_{-1}$ the space of maximal globally hyperbolic anti-de Sitter metrics on $S\times\R$. We describe natural maps between (parts of) $\cQF$ and $\cGH_{-1}$, called ``Wick rotations'', defined in terms of special surfaces (e.g. minimal/maximal surfaces, CMC surfaces, pleated surfaces) and prove that these maps are at least $C^1$ smooth and symplectic with respect to the canonical symplectic structures on both $\cQF$ and $\cGH_{-1}$. Similar results involving the spaces of globally hyperbolic de Sitter and Minkowski metrics are also described. These 3-dimensional results are shown to be equivalent to purely 2-dimensional ones. Namely, consider the double harmonic map $\cH:T^*\cT\to\cTT$, sending a conformal structure $c$ and a holomorphic quadratic differential $q$ on $S$ to the pair of hyperbolic metrics $(m_L,m_R)$ such that the harmonic maps isotopic to the identity from $(S,c)$ to $(S,m_L)$ and to $(S,m_R)$ have, respectively, Hopf differentials equal to $i q$ and $-i q$, and the double earthquake map $\cE:\cT\times\cML\to\cTT$, sending a hyperbolic metric $m$ and a measured lamination $l$ on $S$ to the pair $(E_L(m,l), E_R(m,l))$, where $E_L$ and $E_R$ denote the left and right earthquakes. We describe how such 2-dimensional double maps are related to 3-dimensional Wick rotations and prove that they are also $C^1$ smooth and symplectic. [less ▲]

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See detailSymposium "Positive Psychologie III: Soziale Beziehungen"
Baudson, Tanja Gabriele UL; Brohm-Badry, Michaela

Scientific Conference (2018, September 19)

Detailed reference viewed: 52 (0 UL)