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The study of the projective properties of geometric figures.
‘In Catania he taught projective geometry and descriptive geometry.’
‘This impressive work extended apolarity theory as introduced by Reye to projective geometry in several dimensions using the theory of rational curves.’
‘He united projective geometry and metrical geometry which is dependent on sizes of angles and lengths of lines.’
‘This latter book develops the subject of projective geometry without using the concept of distance and it bases projective geometry on a minimal set of axioms.’
‘He made substantial contributions to projective geometry and wrote an important book on the topic.’
‘His work in geometry included a study of conics, quadrics and projective geometry.’
‘His time for research was now limited but he still made important contributions undertaking research on infinitesimal geometry, projective geometry and the differential geometry of curves and surfaces.’
‘During his imprisonment he studied projective geometry.’
‘His most important work was on differential projective geometry where he used the absolute differential calculus.’
‘Under their direction he laid the basis for the important work he was later to achieve in the fields of foundations of geometry, projective geometry, topology, differential invariants and spinors.’
‘Servois worked in projective geometry, functional equations and complex numbers.’
‘After graduating, he continued working for his doctorate at Trinity on projective geometry.’
‘Pappus of Alexandria is the last of the great Greek geometers and one of his theorems is cited as the basis of modern projective geometry.’
‘This treatise represented a major step forward in understanding the geometry of perspective and it was a major contribution towards the development of projective geometry.’
‘Enriques was appointed to the University of Bologna where he taught projective geometry and descriptive geometry.’
‘He was promoted a number of times, to extraordinary professor in differential geometry, then extraordinary professor in projective geometry, then of analytic geometry.’
‘It contained a number of projective geometry theorems, including Pascal's mystic hexagon.’
‘He began a teaching career in 1870 in a secondary school in Milan, then two years later he went to the University of Rome to teach descriptive and projective geometry.’
‘He was one of the greatest contributors to projective geometry.’
‘One could certainly consider this work as laying the foundations for the theory of descriptive and projective geometry.’