1,791 reputation
711
bio website
location Madrid, Spain
age 51
visits member for 3 years, 11 months
seen 12 hours ago

2d
comment Proof of $p_n<n^2$ by Elementary Means
The statement is not true for $p_1=2$, so you need an exception for that case.
Sep
26
revised Infinitely many primes congruent to 1 mod prime
The proof was incomplete
Sep
26
comment Infinitely many primes congruent to 1 mod prime
You are right the proof is incomplete, let me think if I can find a way to patch it otherwise I will remove it.
Sep
5
comment Number of pairs $(i, j)$ where $1\leq i < j \leq N$ such that $i|j$
Thanks for your comments, I've edited the answer with your sugestions.
Sep
5
revised Number of pairs $(i, j)$ where $1\leq i < j \leq N$ such that $i|j$
added 148 characters in body
Sep
5
revised Number of pairs $(i, j)$ where $1\leq i < j \leq N$ such that $i|j$
Improved the image and hopefully the explanation
Sep
5
answered Number of pairs $(i, j)$ where $1\leq i < j \leq N$ such that $i|j$
Jul
22
answered Sizes of Blocks of Consecutive Integers Divisible by at Least One Prime Less than or Equal to $r$.
Jun
1
answered Infinitely many primes congruent to 1 mod prime
May
12
comment Euler's Refutation of Fermat's Conjecture
Fermat statement was about the integers $2^{2^n}+1$.
May
5
answered Finding the Norm of an element in a field extension
Apr
23
answered Showing that $|f^{(n)}| \le n!n^n$ and then making this result sharper
Apr
6
revised Comparing sums of surds without any aids
added 53 characters in body
Apr
5
answered Comparing sums of surds without any aids
Mar
31
revised Algorithm to find representation of an element of field extension $\mathbb{Q}(q)$ in the form $\sum a_i q^i$
added 125 characters in body
Mar
31
answered Algorithm to find representation of an element of field extension $\mathbb{Q}(q)$ in the form $\sum a_i q^i$
Mar
31
comment quadratic residues and prime divisor
As far as I know, we don't know if there are infinitely many integers $n$ such that $n^2+1$ prime, it is an open problem.
Mar
27
comment Need suggestions for this real world problem
The kind of problem that you are trying to solve is the Vehicle Routing problem. It's an NP Hard problem which is usually solved using heuristic searches and techniques like constrained integer programming.
Mar
17
comment Properties of a certain integer sequence
Carrying the computation a little further gives the sequence: 1, 1, 2, 2, 3, 5, 6, 8, 11, 17, 25, 33, 41, 52, 80, 139, 204, 245, 289, 410, 692, 1159, 1477, 2010, 2769, 4247, 6128, 7709, 9817
Mar
16
revised Partial fraction decomposition of p'/p
Removed the c