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Erdős problem 955

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If A⊂NA\subset \mathbb{N} has density 00 then s−1(A)s^{-1}(A) must also have density 00.

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Technical detailsExact roots, source, and retained record identifiers

Exact provenance

Problem row
sha256:90acaec50183d095107c900ef1d5b0fee191ad60350604712ecb41a959b64204
Metadata
sha256:df2dbe46e86984ceab8c691d47afd01906962efd75d43dd3600d8bb222da1770
Observation
sha256:9c8326e865b6017b103af7611c852a06776d81964979b8ab5a1b800cd550dff6
Content
sha256:40dc1f665d135b5a1caa186859ec552c9e7da5a4283997b9c8b1c0fa3a456083
Repository
sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
Projection
sha256:a4a96441668a9f8b33afbcb3f696a2639f5fae145f36ddc063d7f67d5fb87ce8
Source commit
36c6d0fef71a3fec84d9dcd5eeca4e22e378f7cb
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