The Ethereum Yellowpaper isn't even considered documentation. Its a specification for Ethereum. – renlord – 2016-11-04T05:01:32.617

there is an original whitepaper, yes – markasoftware – 2017-04-21T02:00:40.557

Get the "Mastering Bitcoin" book by Antonopoulos. It covers the encryption math and includes the original whitepaper. – Brannon – 2018-10-05T15:27:46.730