Esteban Crespi
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# 46 Posts

 Nov 27 answered On a generalization for $\sum_{d|n}rad(d)\phi(\frac{n}{d})$ and related questions Oct 14 answered Finding $\sum_{i = 1}^{n} \frac{n} { \gcd(i, n)}$ Oct 7 answered Is it possible to subtract a perfect square from another number to make it a perfect square? Oct 5 answered Sanity check: prime ideals in number fields Sep 23 answered Factorization in a Group Sep 21 answered The most Efficient Algorithm for Factoring Polynomial Over Finite Field Mar 3 answered Is $53$ expressible in this form? Jan 3 answered Algorithm to find maximum possible value of the minimum expression in a list Dec 5 answered Upper limit for the Divisor function 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 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 5 answered Comparing sums of surds without any aids 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 16 answered Partial fraction decomposition of p'/p Mar 15 answered Reciprocity problem in I&R “A Classical Introduction in Modern Number Theory” Mar 14 asked Reducing simultaneously a pair of fractions $\frac{a^2}{b},\frac{ a^3}{c}$ using only gcds Feb 13 answered $17$ is a quadratic residue for all primes $p$ such that $p \equiv \pm 3 \mod{8}$?