Matematiske emner Opgaver & projekter i matematikPythagoras' sætning Tycho Brahes regnemester John Napier og logaritmerne Henry Briggs og titalslogaritmen Hvordan regner en lommeregner? Sfærisk geometri Astronomisk navigation StorcirkelsejladsPerspektivtegning på computeren Emnedag med perspektivtegningPerspektivet Ellipser og ægPiet Heins SuperellipseCasino matematik Geometriske konstruktioner Vinkeltredeling De Store MestreKvinder i matematik FraktalerTallet piVejgeometriStatistik 1Statistik 2Den tyske kodemaskine Enigma (Dansk)Turings angreb på Vigenére cifferet (Dansk)The German cipher machine Enigma (Engelsk)Turing's attack on the Vigenère Cipher (Engelsk)Mandatfordelinger og retfærdighedSæbebobler og deres matematikBayes' fantastiske formelRetsgenetikDen pythagoræiske stemning Det gyldne snit
Poincaré disk model Metric[edit] If u and v are two vectors in real n-dimensional vector space Rn with the usual Euclidean norm, both of which have norm less than 1, then we may define an isometric invariant by where denotes the usual Euclidean norm. Then the distance function is Such a distance function is defined for any two vectors of norm less than one, and makes the set of such vectors into a metric space which is a model of hyperbolic space of constant curvature −1. The associated metric tensor of the Poincaré disk model is given by where the xi are the Cartesian coordinates of the ambient Euclidean space. Relation to the hyperboloid model[edit] The hyperboloid model can be seen as the equation of t2=x2+y2+1 can can be used to construct a Poincaré disk model as a perspective projection viewed from (t=-1,x=0,y=0), projecting the upper half hyperboloid onto an (x,y) unit disk at t=0. The Poincaré disk model, as well as the Klein model, are related to the hyperboloid model projectively. Angles[edit] M.
Explicación del teorema de Poincaré-Perelman | Gaussianos En el mundillo matemático se ha hablado mucho sobre desde que publicara sus trabajos sobre la demostración de la misma en el arXiv . Y en los últimos tiempos la noticia sobre la validez de la demostración y la concesión (y posterior rechazo) de la medalla Fields por parte de Perelman ha circulado por todos los medios de comunicación (prensa, televisión, internet…).Nosotros mismos hablábamos de la concesión de la medalla Fields en este post y del rechazo del premio en este otro . Pero a pesar de toda esta información y de la relevancia que ha adquirido este tema en todos los ámbitos lo que he echado en falta es una explicación más o menos clara sobre qué es lo que dice este (ya) teorema que pueda ser comprensible para la gente que no esté muy en contacto con las Matemáticas a un cierto nivel. En casi todos los sitios donde he visto reseñas sobre la noticia se limitan a comentar el enunciado del resultado propuesto por Poincaré sin preocuparse de explicarlo. Cerrado y acotado.
Challenge Math Online: An Online Program for Gifted, Talented and Promising Math Students | Noetic Learning I am very excited about Challenge Math ... The fact that the problems are chosen carefully to work on developing the skills of the kids that excel in math and to prepare them for national and international competitions is invaluable. There is little of this in school, so we intend to take full advantage of the program in the future. - Dr. Stanislavova Associate Professor, MathematicsUniversity of Kansas Welcome to Challenge Math Online Challenge Math is designed to hone young students' mathematical problem-solving skills and logical reasoning skills. Challenge Math gives out challenging word problem assignments weekly. Challenge Math is primarily designed for gifted elementary students. provides challenge beyond regular school curriculum, strengthens creative problem solving, and logical reasoning skills, further develops gifted students' intellect in math, and helps students excel in national math competitions. Problem Solving Strategies Covered Model with Diagrams | Draw a Picture |
ELibM: Mathematical Journals No graphics version of this pageFor fastest access: Choose your nearest mirror site!For other math journals, see the PSU list of mathematical journals Acta Mathematica Academiae Paedagogicae Nyíregyháziensis Acta Mathematica Academiae Paedagogicae Nyíregyháziensis the journal of College of Nyíregyháza (Hungary). The journal publishes refereed papers from any field in mathematics. Acta Mathematica Universitatis Comenianae This is the electronic version of Acta Mathematica Universitatis Comenianae. The master copies of the files of this Journal are maintained at the Comenius University, Inst. of Applied Math., Bratislava. The free access to the electronic version of this journal is based on the distribution of its print version. Acta Universitatis Apulensis This is the electronic version of Acta Universitatis Apulensis. The master copies of the files of this Journal are maintained at the University of Alba Iulia, Department of Mathematics and Informatics, Alba Iulia, Romania. Ensaios Matemáticos
Hvad er epidemimatematik | Grundskole erhvervsskole og gymnasie Epidemimatematik er den matematik, der anvendes til at forstå og kontrollere epidemier. En epidemi er ophobet forekomst af en sygdom i en bestemt befolkningsgruppe inden for et bestemt tidsrum. Epidemimatematik er alle mulige aspekter af epidemier, der kan forstås og studeres ved hjælp af matematik. Læs mere om, hvorfor det er relevant at arbejde med i matematikundervisningen. Epidemi er et bredt begreb, og epidemimatematik anvendes til at studere udbrud af en smitsom sygdom eller fx udbredelsen af fedme. Og man kan endda finde overskrifter om en epidemi af indbrud. Epidemi-definition i forbindelse med sygdomsudbrud Epidemi er ophobet forekomst af en sygdom i en bestemt befolkningsgruppe inden for et bestemt tidsrum i modsætning til en mere stabil, sædvanlig forekomst (endemi). Epidemimatematik i undervisningen "Hvordan forebygger eller bekæmper vi denne sygdom?" Den grundlæggende model for infektionssygdomme, den såkaldte SIR-model, er behandlet mange steder.
Cayley graph The Cayley graph of the free group on two generators a and b Definition[edit] Suppose that is a generating set. The Cayley graph is a colored directed graph constructed as follows: [2] Each element of is assigned a vertex: the vertex set of is identified with Each generator of is assigned a color .For any the vertices corresponding to the elements and are joined by a directed edge of colour Thus the edge set consists of pairs of the form with providing the color. In geometric group theory, the set is usually assumed to be finite, symmetric (i.e. Examples[edit] Cayley graph of the dihedral group Dih4 on two generators a and b On two generators of Dih4, which are both self-inverse A Cayley graph of the dihedral group D4 on two generators a and b is depicted to the left. A different Cayley graph of Dih4 is shown on the right. b is still the horizontal reflection and represented by blue lines; c is a diagonal reflection and represented by green lines. is depicted to the right. The group
Cantor, una interfaz para las matemáticas para KDE : KDE Blog Publicado el octubre 23rd, 2009 | por Baltasar Ortega Ha nacido una nueva aplicación matemática para KDE. Aunque todavía está en fase de desarrollo, Cantor es una interfaz que nos permite trabajar con nuestrar aplicación matemática favorita integrada con el escritorio KDE. De esta manera podremos resolver ecuaciones, integrar, diferenciar o representar funciones en nuestro entorno gráfico favorito. Actualmente Cantor soporta los motores Sage, Maxima y R. Más información: arieder’s Blog Me gusta: Me gusta Cargando… Sobre el autor baltolkien Fundador y editor de KDE Blog.