نبذة مختصرة : We develop mean dimension theory for R-flows. We obtain fundamental properties and examples and prove an embedding theorem: Any real flow (X, R) of mean dimension strictly less than r admits an extension (Y, R) whose mean dimension is equal to that of (X, R) and such that (Y, R) can be embedded in the R-shift on the compact function space {f is an element of C(R, [-1,1]) : supp((f) over cap) subset of [-r , r]}, where (f) over cap is the Fourier transform of f considered as a tempered distribution. These canonical embedding spaces appeared previously as a tool in embedding results for Z-actions. ; NCN (National Science Center, Poland) 2016/22/E/ST1/00448 2013/08/A/ST1/00275 Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) CONICYT FONDECYT 3190127 Basal funding AFB 170001
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