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Sep 16, 2015 at 19:56 comment added Raziel In my very rough "counter-example" below, Ricci is bounded from below and also from above. Time permitting, I will elaborate on it.
Sep 16, 2015 at 19:37 history edited Alex M. CC BY-SA 3.0
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Sep 9, 2015 at 12:32 answer added Igor Belegradek timeline score: 6
Sep 9, 2015 at 12:12 answer added Raziel timeline score: 3
Sep 9, 2015 at 11:40 history asked Alex M. CC BY-SA 3.0