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A Note on the Stereoscopic Representation of Four
Some General Theorems in the Geometry of a Plane
A General Theory of 0sculating ConiesI
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actual point angle of parallelism arc P0Q axes axis bi-incident Calcutta Mathematical Society called centre circle of curvature co-ordinates common perpendicular consecutive points contrary signs convex arc convex polygon cosh cyclic point denote determined differential Differential Geometry directed elements directed lines directed point direction cosines distinct points elementary ellipse equal equation equidivergent exist extra points Geometry given point Hence hexad horocycle hyperbola HYPERBOLIC GEOMETRY improper point infinitesimal internal bisector intersection intimate intrinsic curvature intrinsic parameter join meet mid-point Mukhopadhyaya n-dimensional n-space negative neighbourhood non-cyclic arc osculating conic osculating plane parabola parallel parametric co-efficients parametric coefficients pass plane points common points of intimacy principal axes principal curvatures principal line principal point radius of curvature respectively right angles right bisector sense side similarly directed sinh stem straight line successive incidences suppose symmetric tangent tendril Theorem three points triangle