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Mathematics
Juan Moreno's user avatar
Juan Moreno's user avatar
Juan Moreno's user avatar
Juan Moreno
  • Member for 6 years, 1 month
  • Last seen this week
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122
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14
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9
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6
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18
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12
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31
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21
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11
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7
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7
$\cos(a)+\cos(b)-\cos(a+b)\geq 1$
Sep 1, 2022
6
Can $\frac{a^n + b^n}{a+b} = c^n$ have a solution? (CONT)
Mar 28
6
Observation and conjecture on Lychrel numbers
Aug 13, 2020
5
Convex polygons - For $n>3$, $\sum_{i=1}^{n} \cos\theta_i < \cos\left(\sum_{i=1}^{n} {\theta_i}\right)$
Aug 30, 2022
4
Prime numbers with consecutive primes as digits
Aug 12, 2022
4
Minimum $k$ for which every positive integer of the interval $(kn, (k+1)n)$ is divisible by at least one prime number less than $n$
Mar 27
4
Can $1!^2+2!^2+3!^2+\dots+n!^2$ be a perfect power when $n\geq2$?
Jul 9, 2023
4
Alternative proof of existence of infinitely many positive integers not of the form $2ij+i+j$
Aug 10, 2023
4
smallest prime number made of consecutive numbers as its digits in decimal representation
Sep 11, 2021
4
Bounding a partial sum with Möbius inversion formula
Nov 6, 2023
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10
Set of prime numbers $q$ such that $\sum\limits_{p\leq\sqrt{q}}p=\pi(q)$, where $p$ are prime numbers
8
Bounding a sum of reciprocals of square-free integers
7
On the connection between sums of prime numbers and distribution of prime numbers