Iverson of APL fame wrote a book on algebra that used his array notation and concepts. The copies are apparently hard to find. The submission was closest thing

Iverson of APL fame wrote a book on algebra that used his array notation and concepts. The copies are apparently hard to find. The submission was closest thing I found to final version. https://en.wikipedia.org/wiki/Kenneth_E._Iverson https://en.wikipedia.org/wiki/Kenneth_E._Iverson https://en.wikipedia.org/wiki/APL_(programming_language) https://en.wikipedia.org/wiki/APL_(programming_language)