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Rubens Vilhena Fonseca's user avatar
Rubens Vilhena Fonseca's user avatar
Rubens Vilhena Fonseca's user avatar
Rubens Vilhena Fonseca
  • Member for 10 years, 1 month
  • Last seen more than a month ago
  • Belém-Pará-Brazil
9 votes
3 answers
1k views

Taxicab Geometry

4 votes
4 answers
228 views

Lines of intersections in a parabola

4 votes
3 answers
120 views

Prime $p$ that results in a power of 2

3 votes
3 answers
329 views

Parabola from a focus and a directrix

3 votes
3 answers
213 views

Finite Differences:

2 votes
1 answer
104 views

The intersection of the same overlapping rectangles

2 votes
2 answers
108 views

Binary Distance between the two Primes

1 vote
2 answers
185 views

Sierpinski Triangle and Benford's Law (Edit)

1 vote
1 answer
56 views

Leading significant digits

1 vote
2 answers
97 views

Parabolas to the right or to the left

0 votes
3 answers
124 views

All composite numbers are crossed by the lines