Assume the continuous function $f:\mathbb{R}\rightarrow\mathbb{R}$ has an unbounded support with nonzero measure. Let $g=f\ast f$, where $\ast$ denotes the convolution operator. Is it possible for $g$ to have a bounded support?
2026-04-08 14:07:42.1775657262
The convolution of an unbounded-support function with itself
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