CSCI 301 L36 Notes

Lecture 36 - Notes

Goals

Announcements

Notes

Mostly the same as L35!

A few things to address today:

Here’s a prettier picture of the Chomsky Hierarchy (credit to Logan Sizemore):

A language is enumerable (sometimes called recursively enumerable) if there exists a Turing machine that can generate all strings in the language. We may be able to do this even if we can’t solve the decision problem (in particular, reject strings not in the language) in finite time.

Example: The set of halting turing machines