Robert Z's user avatar
Robert Z's user avatar
Robert Z's user avatar
Robert Z
  • Member for 8 years, 4 months
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171 votes
4 answers
9k views

The Hole in One Pizza

26 votes
3 answers
1k views

Mysterious identity

9 votes
2 answers
224 views

Show $\int_0^t (t-x)P_n(x)\,dx\leq \frac{t^2}{2}\int_0^1 P_n(x)\,\mathrm dx $ where $P_n(x)=(x(1-x))^{n}$

7 votes
1 answer
326 views

A property of continuous bijective maps in the plane.

6 votes
2 answers
125 views

Divergence of $\sum_{n=1}^{\infty}\prod_{k=1}^n q_k$ for some enumeration $(q_n)_{n}$ of $\mathbb{Q}\cap (0,1)$

5 votes
1 answer
98 views

Tiling the plane with non-similar triangles with restictions

5 votes
1 answer
265 views

An $\arcsin$ inequality

5 votes
2 answers
522 views

How to show that this identity holds?

4 votes
1 answer
629 views

Palindromic numbers whose squares are palindromic too

4 votes
2 answers
211 views

Inequality involving the angle bisectors of a triangle

3 votes
2 answers
147 views

Proving two lines are parallel

3 votes
0 answers
153 views

Extending an old Monthly problem

3 votes
3 answers
352 views

A weird function

2 votes
1 answer
93 views

Is this set dense in some open set?

1 vote
1 answer
588 views

Integral inequality for non-negative and concave functions