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Jul
25
revised Can $O(\sqrt{x})$ be considered $o(x)$?
added 179 characters in body
Jul
25
asked Can $O(\sqrt{x})$ be considered $o(x)$?
Jul
19
comment Product of complex numbers $m+in$ with $0 < m,n \leq N$
@zardo if you can find Stirling approximation in that case then please write an answer
Jul
19
asked Product of complex numbers $m+in$ with $0 < m,n \leq N$
Jul
18
comment Explaining Mathematical Modelling to a nonmathematician
have you considered Math Educators Stackexchange
Jul
18
answered determining which cyclotomic polynomial is $x^8 -x^4+1$
Jul
16
revised If $p\equiv1\pmod{4}$ is a prime, then $-4$ and $(p-1)/4$ are both quadratic residues of $p$.
added 257 characters in body
Jul
16
answered If $p\equiv1\pmod{4}$ is a prime, then $-4$ and $(p-1)/4$ are both quadratic residues of $p$.
Jul
10
revised Let $A \subset \mathbb Z^3$ / $|A| < \infty$. Prove that: $|A| \le \sqrt{|A_x| |A_y| |A_z|}$
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Jul
10
revised How prove this inequality $(1+\frac{1}{16})^{16}<\frac{8}{3}$
added 387 characters in body
Jul
9
comment How prove this inequality $(1+\frac{1}{16})^{16}<\frac{8}{3}$
@StevenStadnicki thanks I redid it from scratch
Jul
9
revised How prove this inequality $(1+\frac{1}{16})^{16}<\frac{8}{3}$
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Jul
9
revised How prove this inequality $(1+\frac{1}{16})^{16}<\frac{8}{3}$
edited body
Jul
9
answered How prove this inequality $(1+\frac{1}{16})^{16}<\frac{8}{3}$
Jul
9
comment Extending 2-adic valuation to real numbers
@Wojowu I now agree. You can define 2-adic norms over any extension over $\mathbb{Q}$. This includes algebraic extensions like $\mathbb{Q}(\sqrt{7})_2$ or $[\mathbb{Q}[x]/(x^3 - x - 1)]_2$ and transcendental extensions like $\mathbb{Q}(\pi)$. Then $\mathbb{R}$ contains all of these. This is even beigger than the algebraic closure $\overline{\mathbb{Q}} \cap \mathbb{R}$ containing all real algebraic extensions.
Jul
9
revised Extending 2-adic valuation to real numbers
deleted 263 characters in body
Jul
6
revised Let $A \subset \mathbb Z^3$ / $|A| < \infty$. Prove that: $|A| \le \sqrt{|A_x| |A_y| |A_z|}$
added 263 characters in body
Jul
6
answered Let $A \subset \mathbb Z^3$ / $|A| < \infty$. Prove that: $|A| \le \sqrt{|A_x| |A_y| |A_z|}$
Jul
6
revised Does $ \sum_{(m,n) \neq (0,0)} \frac{(-1)^{m+n}}{m^2 + n^2} $ have an exact value?
added 233 characters in body
Jul
6
revised Does $ \sum_{(m,n) \neq (0,0)} \frac{(-1)^{m+n}}{m^2 + n^2} $ have an exact value?
added 233 characters in body