Overview of differential equations
Strogatz NYT article on the math of visualization of the example from this video, by Ilya you’re looking for books on this topic, I’d recommend the one by Vladimir Arnold, “Ordinary Differential Equations”
Also, more Strogatz fun, you may enjoy his text “Nonlinear Dynamics And Chaos”
Curious about why it’s called a “phase space”? You might enjoy this a response on /r/3blue1brown, here are some interactives based on examples shown in the you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then “add subtitles/cc”. Download the music on the music on is a channel about animating math, in all senses of the word animate.
Source: www.youtube.com