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Erdős problem 3

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If A⊂NA \subset \mathbb{N} has ∑n∈A1n=∞\sum_{n \in A}\frac 1 n = \infty, then must A contain arbitrarily long arithmetic progressions?

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Problem row
sha256:2351d5edbad5b2454c884a2526e13d677e2a060d37796e41a487b09913b96de0
Metadata
sha256:e027c403ee45e2b6acb70de972cc96a0e4e7a1eaec409eea7711280c0ae9f73c
Observation
sha256:9c8326e865b6017b103af7611c852a06776d81964979b8ab5a1b800cd550dff6
Content
sha256:d7e3668fa7eb41d572556132cb667bd41d54dfc7ac7949d964b94fd8990b9a94
Repository
sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
Projection
sha256:a4a96441668a9f8b33afbcb3f696a2639f5fae145f36ddc063d7f67d5fb87ce8
Source commit
36c6d0fef71a3fec84d9dcd5eeca4e22e378f7cb
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