Skip to main content
Lucas Henrique's user avatar
Lucas Henrique's user avatar
Lucas Henrique's user avatar
Lucas Henrique
  • Member for 8 years, 8 months
  • Last seen this week
8 votes
4 answers
312 views

Prove that there are at least 100 pairs of usable boots

4 votes
2 answers
326 views

What is the least positive integer $x$ such that $x^2$ starts with 2017?

4 votes
0 answers
404 views

Prove that every positive rational number can be written in factorial base

4 votes
0 answers
161 views

Is every proposition on Cartesian geometry provable on synthetic Euclidean geometry?

3 votes
1 answer
241 views

Why and how can we use set theory with other undefined elements from logical theories? [closed]

3 votes
2 answers
566 views

If $(A+B)^n$ is binomial for some $n$, does that imply $AB = BA$?

3 votes
1 answer
521 views

General way to determine $\mathbb{Q}(\gamma) = \mathbb{Q}(\alpha,\beta)$ given $\alpha$ and $\beta$

3 votes
1 answer
735 views

Prove that irreducible character of subgroup extends to $[G:H]$ irreducible characters of abelian group

3 votes
3 answers
805 views

Find the area of a triangle inscribed in the ellipse

2 votes
1 answer
65 views

Prove that the vectors follow the inequality

2 votes
1 answer
436 views

How to relate the perpendicular line that touches a circle and an inscribed triangle with its sides/area?

2 votes
1 answer
73 views

How many positive integers $d$ satisfy the conditions?

2 votes
1 answer
86 views

Wrong result on 2017 MathCamp P1

2 votes
4 answers
421 views

Solve $x^2 \equiv 1 \pmod{30}$ and generalize.

1 vote
4 answers
1k views

What is the sum of the cube of the roots of $ x^3 + x^2 - 2x + 1=0$?

1 vote
2 answers
100 views

Prove that it's possible to find two students in the same group

0 votes
1 answer
445 views

Prove that $x^3 + y^3 = 9$ has infinitely many rational solutions

0 votes
1 answer
247 views

Is it formally right to say that $\Bbb N \subset \Bbb Z$ etc? [duplicate]

0 votes
0 answers
46 views

What are the conditions for a function $f\colon X \to Y$ to be regular when $X$ and $Y$ are prevarieties?