CSE 425: Intro to Programming Languages and their Design Evolving to Higher Levels of Abstraction Algebraic notation and floating point numbers --E.g., Fortran ( <PERSON>) Structured abstractions and machine independence --E.g., <PERSON> (a committee), <PERSON> ( <PERSON>) Architecture independence (on beyond <PERSON>) --E.g., based on Lambda Calculus ( <PERSON>) --E.g., Lisp ( <PERSON>)