Start Calculator Geometric Calculator - Glossary Here are some terms and people who deserve definitions. 0-vectorA scalar. 1-vectorA vector. 2-vectorA bivector. 3-vectorA trivector. Bivector BladeHestenes' term for a multivector with no scalar part, to emphasise their directional nature. CliffordWilliam Kingdon Clifford. English geometer. 1845-1879. "If he had lived we might have known something." Complex number Conjugation DilationTo change in magnitude or scale, as by multiplying by a scalar. Also written as dilatation. FlatA linear subspace. Floating point numberA computer approximation to a real number. Geometric product GibbsJosiah Willard Gibbs. American mathematical physicist. 1839-1903. Grade GrassmannHermann Grassmann. German scholar. 1809-1877. HamiltonSir William Rowan Hamilton. Irish mathematical physicist. 1805-1865. HeavisidesOliver Heavisides. English researcher. 1850-1925. HestenesDavid Hestenes. Imaginary number Inner product MagnitudeThe value of a scalar, the length of a vector, the area of a bivector, the volume of a trivector, or the sum of all these in a mixed multivector. Multiblade Multivector Outer product Pseudoscalar Quaternion Real number ReflectionA transformation which preserves distances and leaves a plane, the plane of reflection, unchanged. ReversionUnary operation on a multivector which negates those components which would change sign if their vector factors were reversed in order. Hence the reversion of x is x, but the reversion of xy is -xy. RotationA transformation which preserves distances and leaves a line, the axis of rotation, unchanged. ScalarA real number. Translation TrivectorA directed volume. UnitaryHaving a magnitude of one. VectorA directed length. Vector cross product Vector dot product
 Roger E Critchlow Jr Last modified: Fri May 16 19:38:48 MDT 2003 elf.org