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Encyclopedia > Transformation geometry

In mathematics, transformation geometry is a name for a pedagogic theory for teaching Euclidean geometry, based on the Erlangen programme. Felix Klein, who pioneered this point of view, was himself interested in mathematical education. It took many years, though, for his "modern" point of view to have much effect, with the synthetic geometry remaining dominant. Euclid, Greek mathematician, 3rd century BC, as imagined by by Raphael in this detail from The School of Athens. ... Euclid Euclidean geometry is a mathematical system attributed to the Greek mathematician Euclid of Alexandria. ... An influential research programme and manifesto was published in 1872 by Felix Klein, under the title Vergleichende Betrachtungen über neuere geometrische Forschungen. ... Felix Christian Klein (April 25, 1849, Düsseldorf, Germany – June 22, 1925, Göttingen) was a German mathematician, known for his work in group theory, function theory, non-Euclidean geometry, and on the connections between geometry and group theory. ... Mathematics education is the study of the practices and methods of teaching mathematics. ... Synthetic geometry is a descriptive term that identifies a methodology of geometry which makes use of theorems and synthetic observations to create theorems or solve problems, as opposed to analytic geometry which uses algebra, numbers, computations to draw theorems or solve problems. ...


In the end, the reform of geometry teaching came simultaneously with the New Math movement. To do real transformation geometry requires some work with symmetry groups; if not group theory, matrix computations are required. The tide of transformation geometry retreated, leaving behind some vector methods. New math is a term referring to a brief dramatic change in the way mathematics was taught in American grade schools during the 1960s. ... The symmetry group of an object (e. ... Group theory is that branch of mathematics concerned with the study of groups. ... In mathematics, a matrix (plural matrices) is a rectangular table of numbers or, more generally, a table consisting of abstract quantities that can be added and multiplied. ... Vector calculus (also called vector analysis) is a field of mathematics concerned with multivariate real analysis of vectors in two or more dimensions. ...


  Results from FactBites:
 
Affine transformation - Wikipedia, the free encyclopedia (1084 words)
The invertible affine transformations form the affine group, which has the general linear group of degree n as subgroup and is itself a subgroup of the general linear group of degree n+1.
For example, describing a transformation as a rotation by a certain angle with respect to a certain axis is easier to get an idea of the overall behavior of the transformation than describing it as a combination of a translation and a rotation.
A linear transformation is a function that preserves all linear combinations; an affine transformation is a function that preserves all affine combinations.
PlanetMath: geometry (4223 words)
Geometry, or literally, the measurement of land, is among the oldest and largest areas of mathematics.
An approach to geometry first formulated by Felix Klein in his Erlangen lectures is to describe it as the study of invariants under certain allowed transformations.
The discovery of intrinsic geometry led thoughtful geometers such as Riemann (who was a student of Gauss), Clifford, and Mach to the conclusion that a “right and natural” approach to geometry should regard surfaces as geometrical spaces in their own right on a par with Euclidean and projective space.
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