Talk:Markov constant

The charts

What are the charts showing? If I had to guess I would say the vertical axis is $M(\alpha )$ and the horizontal axis is $\log \alpha$... but that isn't stated anywhere. I would also guess that the points are all where $\alpha$ is a multiple of some irrational constant, but that isn't really clear either.... and I could be wrong about all of this.

Yaris678 (talk) 18:18, 4 December 2019 (UTC)

okay, I think I messed up with my caption(s). But remember the Definition where one of them was defined with a limit as k tends to infinity (is it k?). Suppose we call that function in the limit f(k). For a specific alpha, I am plotting those graphs to show f(k) against log(k), to demonstrate the suprema (i.e. maxima) of those f(k) which is thearkov constant of alpha. 數神, the Lord of Math (Prove me wrong; My contributions to the world in numbers) 23:22, 4 December 2019 (UTC)

I will fiz the captions very soon. I am busy now. Sorry to all. 數神, the Lord of Math (Prove me wrong; My contributions to the world in numbers) 01:27, 5 December 2019 (UTC)

@數神:Still waiting for a description of what the charts are showing. Yaris678 (talk) 13:44, 6 January 2020 (UTC)

@Yaris678: sorry for the late reply, apparently I just forgot about it completely. But the graph is a demo that the Markov constant of sqrt(10)/2 is equal to sqrt(10) via the second definition. The x-axis is log(k) (natural log) and the y-axis is that big thing in the lim sup in the alternate definition. The Lord of Math (Message; contribs) 23:15, 6 January 2020 (UTC) (name changed from User:數神)

So I am clear, are you saying the vertical axis is ${\frac {1}{k^{2}\left\vert \alpha -{\frac {f(k)}{k}}\right\vert }}$, where $f(k)$ is defined as the closest integer to $\alpha k$? Yaris678 (talk) 10:09, 9 January 2020 (UTC)

Yep - exactly. tLoM (The Lord of Math) (Message; contribs) 14:36, 10 January 2020 (UTC)

Feedback from New Page Review process

I left the following feedback for the creator/future reviewers while reviewing this article: This article is exceedingly dense, and also lacking in references. While articles on math should be appropriately technical, they must also be understandable by the average person. Please endeavor to add well-written prose that explains the concept simply..

CaptainEek ^{Edits Ho Cap'n!}⚓ 08:20, 18 January 2020 (UTC)

About the formula for $\alpha _{n}$

The formula reads $\alpha _{n}={\frac {2u-3m_{n}+{\sqrt {9m_{n}^{2}-4}}}{2m_{n}}}$.

According to the preceding subsection, by setting $p=-1,q=0,r=0,s=1$ we have $M(-\alpha )=M(\alpha )$, so perhaps the sign of ${\sqrt {9m_{n}^{2}-4}}$ in the numerator is not important.

Markov constants are obviously invariant under translation by units (in other words, it is a function on $(\mathbb {R} -\mathbb {Q} )/\mathbb {Z}$), so the coefficient $-3$ is not essential and can be replaced by any odd number.

I have question on $u$: Do we really need it to be the smallest solution to the congruence? I mean, if $m_{n}$ has $k$ distinct odd prime factors, then $u^{2}\equiv -1\,(\operatorname {mod} m_{n})$ has $2^{k}$ solutions (which is at least $2$ for $m_{n}>2$; since all those odd prime factors are congruent to 1 modulo 4), so would only the smallest one work? 14.52.231.91 (talk) 05:36, 23 August 2024 (UTC)

By the way, I am not sure, but A327342 may be relevant. 14.52.231.91 (talk) 05:40, 23 August 2024 (UTC)

Most importantly: Do the numbers equivalent to $\alpha _{n}$ all solutions to $M(\alpha )=\lambda _{n}$, or do they only form one family? If the latter is the case, how many families are there for each $n$? 14.52.231.91 (talk) 04:13, 26 August 2024 (UTC)