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A Characterization of Similarity Maps Between Euclidean Spaces Related to the Beckman--Quarles Theorem

Jobst Heitzig
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Abstract

It is shown that each continuous transformation $h$ from Euclidean $m$-space ($m>1$) into Euclidean $n$-space that preserves the equality of distances (that is, fulfils the implication $|x-y|=|z-w|\Rightarrow|h(x)-h(y)|=|h(z)-h(w)|$) is a similarity map. The case of equal dimensions already follows from the Beckman--Quarles Theorem.

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Jobst Heitzig. 2002-03-22. A Characterization of Similarity Maps Between Euclidean Spaces Related to the Beckman--Quarles Theorem. https://arxiv.org/abs/math/0203233

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