03583nam a22004335i 4500001001800000003000900018005001700027007001500044008004100059020001800100020001900118024003100137040000900168082001200177100003000189245011300219264004600332300004500378336002600423337002600449338003900475347002400514490005100538505019100589520194800780650001702728650001902745650001402764650001702778650001402795650005202809700002302861700002502884710003402909773002002943776003602963830005102999856009903050978-0-387-29052-2DE-He21320260521091851.0cr nn 008mamaa100301s2005    xxu|    s    |||| 0|eng d  a9780387290522  a997803872905227 a10.1007/0-387-29052-42doi  cCICY04a5162231 aStillwell, John.eauthor.14aThe Four Pillars of Geometryh[recurso electrónico] /cby John Stillwell ; edited by S. Axler, K.A. Ribet. 1aNew York, NY :bSpringer New York,c2005.  aXII, 229 p. 138 illus.bonline resource.  atextbtxt2rdacontent  acomputerbc2rdamedia  arecurso en líneabcr2rdacarrier  atext filebPDF2rda1 aUndergraduate Texts in Mathematics,x0172-60560 aStraightedge and compass -- Euclid's approach to geometry -- Coordinates -- Vectors and Euclidean spaces -- Perspective -- Projective planes -- Transformations -- Non-Euclidean geometry.  aFor two millennia the right way to teach geometry was the Euclidean approach, and in many respects, this is still the case. But in the 1950s the cry "Down with triangles!" was heard in France and new geometry books appeared, packed with linear algebra but with no diagrams. Was this the new right approach? Or was the right approach still something else, perhaps transformation groups? The Four Pillars of Geometry approaches geometry in four different ways, spending two chapters on each. This makes the subject accessible to readers of all mathematical tastes, from the visual to the algebraic. Not only does each approach offer a different view; the combination of viewpoints yields insights not available in most books at this level. For example, it is shown how algebra emerges from projective geometry, and how the hyperbolic plane emerges from the real projective line. The author begins with Euclid-style construction and axiomatics, then proceeds to linear algebra when it becomes convenient to replace tortuous arguments with simple calculations. Next, he uses projective geometry to explain why objects look the way they do, as well as to explain why geometry is entangled with algebra. And lastly, the author introduces transformation groups---not only to clarify the differences between geometries, but also to exhibit geometries that are unexpectedly the same. All readers are sure to find something new in this attractive text, which is abundantly supplemented with figures and exercises. This book will be useful for an undergraduate geometry course, a capstone course, or a course aimed at future high school teachers. John Stillwell is Professor of Mathematics at the University of San Francisco. He is the author of several highly regarded books published by Springer, including Elements of Number Theory (2003), Mathematics and Its History (Second Edition, 2002), Numbers and Geometry (1998) and Elements of Algebra (1994). 0aMATHEMATICS. 0aMATRIX THEORY. 0aGEOMETRY.14aMATHEMATICS.24aGEOMETRY.24aLINEAR AND MULTILINEAR ALGEBRAS, MATRIX THEORY.1 aAxler, S.eeditor.1 aRibet, K.A.eeditor.2 aSpringerLink (Online service)0 tSpringer eBooks08iPrinted edition:z9780387255309 0aUndergraduate Texts in Mathematics,x0172-605640uhttp://dx.doi.org/10.1007/0-387-29052-4zVer el texto completo en las instalaciones del CICY