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7

Part of 1964 Miklós Schweitzer

Problems(1)

Miklos Schweitzer 1964_7

Source:

9/20/2008
Find all linear homogeneous differential equations with continuous coefficients (on the whole real line) such that for any solution f(t) f(t) and any real number c,f(t\plus{}c) is also a solution.
invariantfunctionreal analysisreal analysis unsolved