How to develop a mobile computer algebra system

Abstract

Historically, a lot of computer algebra systems were designed to have a command line interface, then GUI was added if required. AsirPad -- a computer algebra system with a handwriting interface on PDA developed by the author is one of them. Risa/Asir -- a CAS with a command line interface is the CAS engine of AsirPad, and AsirPad is created by covering it with GUI. This method is suitable to develop an application based on an existing CAS for mobile devices such as tablets and smartphones. In this tutorial, I would like to explain the details of this method.