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Aspirant
  • Member for 3 years, 6 months
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10 votes
2 answers
267 views

Typical Olympiad Inequality? If $\sum_i^na_i=n$ with $a_i>0$, then $\sum_{i=1}^n\left(\frac{a_i^3+1}{a_i^2+1}\right)^4\geq n$

6 votes
1 answer
353 views

Finding a set of maximal sum , such that no two subsets have the same sum.

3 votes
2 answers
143 views

Switching lamps on and off

3 votes
2 answers
120 views

Tiling of a deficient $7\times7$ chessboard with L trominoes

2 votes
2 answers
73 views

An Integral Error

1 vote
0 answers
45 views

Challenging Cubic Conundrum

1 vote
1 answer
90 views

If $\frac{\sin(b+\theta)\sin a}{\sin b}=\frac{\sin(c+\theta)\sin b}{\sin c}=\frac{\sin(a+\theta)\sin c}{\sin a}$, for arbitrary $\theta$, then $a=b=c$

1 vote
1 answer
55 views

Substituting variables in integral functional equations

0 votes
1 answer
88 views

Integral Modulus Inequality

0 votes
0 answers
28 views

Intriguing Inequality Question? Find the minimum value of $\sum (a1-a2)^2$ [duplicate]

-1 votes
1 answer
50 views

Uncomputability of Certain Functions