Youtube activity of "Eric Astier" (@ericastier1646) on "Numberphile" channel.
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UCA4NhU3HtQRlHOZJvNQbFpg
Commenter youtube id
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Eric Astier
Commenter name
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@ericastier1646
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"A Miraculous Proof (Ptolemy's Theorem) - Numberphile"
Comments by video