We construct a scalar, first order, almost periodic ODE (*) x + A(t)x - B(t) which admits bounded solutions, but no almost periodic solutions. Using this equation, we give an example of a two-dimensional, almost periodic system whose projective flow admits two minimal subsets, one of which is almost automor- phic but not almost periodic. Finally, we show that some equation in the hull of (*) admits an almost automorphic, nonalmost periodic solution.

A linear, almost periodic equation with an almost automorphic solution / R. Johnson. - In: PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY. - ISSN 0002-9939. - STAMPA. - 82:(1981), pp. 199-205. [10.1090/s0002-9939-1981-0609651-0]

A linear, almost periodic equation with an almost automorphic solution

JOHNSON, RUSSELL ALLAN
1981

Abstract

We construct a scalar, first order, almost periodic ODE (*) x + A(t)x - B(t) which admits bounded solutions, but no almost periodic solutions. Using this equation, we give an example of a two-dimensional, almost periodic system whose projective flow admits two minimal subsets, one of which is almost automor- phic but not almost periodic. Finally, we show that some equation in the hull of (*) admits an almost automorphic, nonalmost periodic solution.
1981
82
199
205
R. Johnson
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/396054
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