Talk:Tetradic number

The complete font-dependence of this concept
That the concept this article describes is entirely dependent on the happenstance of a particular font actually displaying "0", "1", and "8" in fourfold symmetry should be explained in the article, which currently makes it sound like an inherent property of numbers containing only those digits. To illustrate:


 * [[File:Counterillustration re tetradic numbers.png]]

It is also thoroughly dependent on the notation system, as it works not at all with Hindi or Chinese numerals while, to the extent it works in Arabic numbering (with 1, 8, and 0 being symmetrical or not, depending on the font used), it may also work with 5 and 7; while in Chinese it doesn't work with 8 or the traditional character for 0 but it may work with 3, again depending on the font.

Largoplazo (talk) 03:16, 29 October 2018 (UTC)