An elementary treatise on quaternions |
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Page ix
... analysis is certain to lead at once to error on account of the novelty of the processes employed . The Table of Contents has been drawn up so as to give the b student a short and simple summary of the chief fundamental PREFACE . ix.
... analysis is certain to lead at once to error on account of the novelty of the processes employed . The Table of Contents has been drawn up so as to give the b student a short and simple summary of the chief fundamental PREFACE . ix.
Page xii
... drawn through the origin parallel to B. p = a + xB is the equation of a line drawn through the extremity of a and parallel to B , § 28 . p = ya + xB represents the plane through the origin parallel to a and B , § 29 . The condition that ...
... drawn through the origin parallel to B. p = a + xB is the equation of a line drawn through the extremity of a and parallel to B , § 28 . p = ya + xB represents the plane through the origin parallel to a and B , § 29 . The condition that ...
Page 9
... draw PQ parallel to CO , meeting the plane BOA in Q. [ There must be a real point Q , else PQ , and therefore CO , would be parallel to BOA , a case specially excepted . ] From Q draw QR parallel to BO , meeting OA in R. Then OP = OR + ...
... draw PQ parallel to CO , meeting the plane BOA in Q. [ There must be a real point Q , else PQ , and therefore CO , would be parallel to BOA , a case specially excepted . ] From Q draw QR parallel to BO , meeting OA in R. Then OP = OR + ...
Page 10
... drawn eastwards , j northwards , and k upwards , this is equivalent merely to saying that if two points coincide , they are equally to the east ( or west ) of any third point , equally to the north ( or south ) of it , and equally ...
... drawn eastwards , j northwards , and k upwards , this is equivalent merely to saying that if two points coincide , they are equally to the east ( or west ) of any third point , equally to the north ( or south ) of it , and equally ...
Page 11
... drawn from the origin parallel to ẞ ( § 22 ) . = The straight line drawn from A , where OA a , and parallel to B , has the equation p = a + xß . ...... ( 1 ) In words , we may pass directly from 0 to P by the vector OP or p ; or we may ...
... drawn from the origin parallel to ẞ ( § 22 ) . = The straight line drawn from A , where OA a , and parallel to B , has the equation p = a + xß . ...... ( 1 ) In words , we may pass directly from 0 to P by the vector OP or p ; or we may ...
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Common terms and phrases
a₁ arcs axes axis B₁ Cartesian centre Chapter circle commutative law cone conjugate constant cöordinates coplanar curvature curve developable surface diameters differential direction drawn easily ellipsoid envelop equal evidently expression extremity Find the equation Find the locus formula geometry given equation given lines given point given vectors gives Hamilton Hence indeterminate intersection LAOB last section length linear and vector m₁ m₂ multiply normal obviously origin osculating plane P₁ parabola parallel properties prove quaternion radius rectangular represents right angles rotation S.aßy Saß scalar scalar equations second order self-conjugate sides solution sphere spherical conic ẞ² straight line student surface surface of revolution tangent plane Taylor's Theorem tensor theorem three vectors triangle unit-vector Vaß vector function vector perpendicular versor written φρ
Popular passages
Page 153 - Find the locus of a point the ratio of whose distances from two given points is constant. Let the given points be 0 and A, the extremities of the vector a.
Page 149 - Find the equation of the locus of a point the sum of the squares of whose distances from a number of given planes is constant. 11. Substitute " lines" for "planes
Page 217 - Differentiation of the equations gives us 3p + q+l equations, linear and homogeneous in the 3m + n differentials of the scalar parameters, so that by the elimination of these we have one final scalar equation in the first case, two in the second ; and thus in each case we have just equations enough to eliminate all the arbitrary parameters.
Page 14 - The bisectors of the sides of a triangle meet in a point, which trisects each of them.
Page 195 - Find the equation of the locus of a point the square of whose distance from a given line is proportional to its distance from a given plane.
Page 50 - It is curious to compare the properties of these quaternion symbols with those of the Elective Symbols of Logic, as given in BOOLE'S wonderful treatise on the Laws of Thought ; and to think that the same grand science of mathematical analysis, by processes remarkably similar to each other, reveals to us truths in the science of position far beyond the powers of the geometer, and truths of deductive reasoning to which unaided thought could never have led the logician.