# isometry

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Related to Isometries: Group of isometries

## isometry

(ī-sŏm′ĭ-trē)
n.
1. Equality of measure.
2. Equality of elevation above sea level.
3. Mathematics A function between metric spaces which preserves distances, such as a rotation or translation in a plane.
4. Biology A proportional change in the size of a part or parts of an organism as the organism grows.
References in periodicals archive ?
The set of all linear isometries on the little Bloch space [B.sub.0] and the set of all surjective linear isometries on the big Bloch space B has the form [GAMMA] = {[lambda]([C.sub.[phi]] - [Z.sub.[phi]]) : [phi] is a rotation, |[lambda]| = 1} where [Z.sub.[phi]](f) = f ([phi](0)) .
Indeed, if [PHI](x) is made up of isometries of ([F.sub.x],g(x)), the elements of [??](x) are isometries of ([R.sup.k], <, >), with the inner product <, > induced by g(x).
The internal symmetry space is [CP.sup.1] = SU(2)/U(1) (a sphere [S.sup.2] ~ [CP.sup.1]) where the isospin group SU(2) acts via isometries on [CP.sup.1].
The Killing vector field (45) is an example of case (A) and thus X and l commute and hence no additional isometries arise.
Kanai: Rough isometries and the parabolicity of Riemannian manifolds, J.
space, if all geodesies are homogeneous with respect to the largest connected group of isometries. All naturally reductive spaces are g.o.
Then [V.sub.0], [V.sub.e] are two isometries on [X.sub.0], [X.sub.e], respectively.
Specific topics include Young-Fenchel transformation and some new characteristics of Banach spaces, an example of the boundary of topologically inverted elements, sums and products of bad functions, disc algebra and a moment problem, the stability of logmodularity for uniform algebras, regularity and amenability conditions for uniform algebras, closed suns of marginal subspaces of Banach function space, surjections on the algebras of continuous functions which preserve peripheral spectrum, asymptotics of Toeplitz determinants generated by functions with Fourier coefficients in weighted Orlicz sequence classes, spectral isometries, examples of Banach spaces that are not Banach algebras, and a spectra of algebras of analytic functions and polynomials on Banach space.
In this paper, we deal with surjective isometries of spaces of Radon measures defined on compact Hausdorff spaces.
By introducing the notion of metricoid spaces, a generalization of Mazur-Ulam theorem for isometries between metricoid spaces was given in .
Chapter 4 moves to principles of geometry, including basic isometries, congruence, dilation, and similarity, focusing on how precise definitions of commonsense phrases like "same shape" help students gain intuition.
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