{ "id": "1901.04317", "version": "v1", "published": "2019-01-10T21:22:08.000Z", "updated": "2019-01-10T21:22:08.000Z", "title": "The wave model of metric spaces", "authors": [ "M. I. Belishev", "S. A. Simonov" ], "categories": [ "math.FA", "math-ph", "math.MP" ], "abstract": "Let $\\Omega$ be a metric space, $A^t$ denote the metric neighborhood of the set $A\\subset\\Omega$ of the radius $t$; ${\\mathfrak O}$ be the lattice of open sets in $\\Omega$ with the partial order $\\subseteq$ and the order convergence. The lattice of $\\mathfrak O$-valued functions of $t\\in(0,\\infty)$ with the point-wise partial order and convergence contains the family ${I\\mathfrak O}=\\{A(\\cdot)\\,|\\,\\,A(t)=A^t,\\,\\,A\\in{\\mathfrak O}\\}$. Let $\\widetilde\\Omega$ be the set of atoms of the order closure $\\overline{I\\mathfrak O}$. We describe a class of spaces for which the set $\\widetilde\\Omega$, equipped with an appropriate metric, is isometric to the original space $\\Omega$. The space $\\widetilde\\Omega$ is the key element of the construction of the wave spectrum of a symmetric operator semi-bounded from below, which was introduced in a work of one of the authors. In that work, a program of constructing a functional model of operators of the aforementioned class was devised. The present paper is a step in realization of this program.", "revisions": [ { "version": "v1", "updated": "2019-01-10T21:22:08.000Z" } ], "analyses": { "subjects": [ "34A55", "47A46", "06B35" ], "keywords": [ "metric space", "wave model", "metric neighborhood", "functional model", "order convergence" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }