I have problems with this proof: How to prove that the module of characteristic function is less than one.
Why $\vert\mathbb{E}[^{}]\vert\le \mathbb{E}[\vert^{}\vert]$?
2026-03-27 14:57:56.1774623476
module of characteristic function <1
240 Views Asked by user776949 https://math.techqa.club/user/user776949/detail AtRelated Questions in PROBABILITY-THEORY
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