▽Nineteenth Century Geometry ●08/12 17:58 However, the fifth one sounds more like a statement of fact. Euclid’s text can be rendered in English as follows: “If a straight line [c] falling on two straight lines [a and b]makes the interior angles on the same side less than two right angles,the two straight lines [a and b], if produced indefinitely, meet on that side on which are the angles less than the two right angles” (terms
▽Projective and Polar Spaces ●01/07 01:27 Projective and Polar Spaces Here is the second edition of Projective and Polar Spaces, by Peter J. Cameron. The first edition was published as QMW Maths Notes 13 in 1991. The new LaTeX edition has much the same material but with some corrections and additions. Separate chapters are available as PDF files: Preface and table of contents 1. Projective spaces 2. Projective planes 3. Coordinatisation o
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