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Đào Thanh Oai's user avatar
Đào Thanh Oai's user avatar
Đào Thanh Oai's user avatar
Đào Thanh Oai
  • Member for 6 years, 8 months
  • Last seen more than a month ago
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18
An ellipse through 12 points related to Golden ratio
17
Is every odd positive integer of the form $P_{n+m}-P_n-P_m$?
15
Do two new special points in any triangle exist?
14
Is it a new discovery on conic section?
14
Can four integer numbers $x$, $y$, $x-y$, $x+y$ be powerful numbers where $\gcd(x,y)=1$?