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20 de may. de 2024 · An important method for calculating the various groups is the concept of stable algebraic topology, which finds properties that are independent of the dimensions. Typically these only hold for larger dimensions. The first such result was Hans Freudenthal's suspension theorem, published in 1937.
4 de may. de 2024 · Hans Freudenthal, Lie groups in the foundations of geometry, Advances in Mathematics, 1 (1965) 145–190 ; On special holonomy orbifolds: Jeff Cheeger, Gang Tian, Anti-self-duality of curvature and degeneration of metrics with special holonomy, Commun. Math. Phys. 255, 391–417 (2005) (doi:10.1007/s00220-004-1279-0)
10 de may. de 2024 · The puzzle that cannot be solved is known as the Impossible Puzzle. It is a logic puzzle that was first published in 1969 by Hans Freudenthal. It is also commonly referred to as the Sum and Product Puzzle or the Impossible Puzzle because it lacks sufficient information for a solution.
Hace 15 horas · Of zoals Brouwer het zelf placht te zeggen. ‘Men zegt toch ook niet dat Whinger in 1865 de ‘beklimbaarheid’ van de Matterhorn heeft bewezen, maar dat hij de Matterhorn heeft beklommen.’ Op 2 december 1966 overleed Brouwer in Blaricum ten gevolge van een auto-ongeval. Zijn leerling Hans Freudenthal schreef in zijn in memoriam.
11 de may. de 2024 · Les conjugueuls #4»: «Lingua cosmica. Dans ce dernier chapitre du cycle d’expositions hors les murs «les conjugu euls », résonnent des paroles d’hier, d’aujourd’hui et de demain. Son titre est emprunté au mathématicien Hans Freudenthal, qui met au point en 1960 la Lingua Cosmica («langue cosmique»).
20 de may. de 2024 · Why to publish on mathematics education so as to be useful? Educational Studies in Mathematics and its founder Hans Freudenthal: Danny Beckers: Theorizing mathematics instruction using ritual: tensions in teaching fractions in a fifth grade classroom: Andrea Vujan McCloskey · Gwendolyn M. Lloyd · Courtney Lynch
20 de may. de 2024 · Der bekannte Mathematiker und Pädagoge Hans Freudenthal schrieb bereits 1973: „Wenn unser Unterricht heute darin besteht, dass wir Kindern Dinge eintrichtern, die in einem oder zwei Jahrzehnten besser von Rechenmaschinen erledigt werden, beschwören wir Katastrophen herauf.“
