I first saw the piece “Composição em Vermelho e Preto” by Aluisio Carvão at Pat Bellew's math history blog 5 years ago, and made [url=http://mathhombre.tumblr.com/post/66599985878/carv%C3%A3o-the-other-day-pat-belew]an interpretation[/url] , but I wanted to have another go at it today, so here's this. Such a lovely pattern![br][br]Pat's post: [url=https://pballew.blogspot.com/2018/11/on-this-day-in-math-november-10.html]https://pballew.blogspot.com/2018/11/on-this-day-in-math-november-10.html[/url][br]Original GGB: [url=https://www.geogebra.org/m/rGfU62rs]https://www.geogebra.org/m/rGfU62rs[/url]