Problem Set 5

home work!

Topic Standard Reductions, Typing Derivations

Purpose The goal of this problem set is to formulate a standard reduction relation and explore its properties, and to get some experience with typing derivations.


Problem 1 Add a standard (left-to-right) reduction relation to your Redex model of DADL. Name the relation ->dd-std.

Formulate a redex-check conjecture that relates traverse from Problem Set 3 to the standard reduction relation.

Include the same solution for problem 2 of Problem Set 3 that you used for Problem Set 4.

Problem 2 See here. Solutions to this problem should be submitted on paper at the beginning of class on 2/27.

Deliverable Email a tar.gz bundle to my CCS email address whose name combines the last names of the pair in alphabetical order. The tar bundle must contain a single directory—with the same name as the tar ball—with a README.txt file and a 5.rkt Redex file.

The README.txt file must start with the following lines:

  ;; NameOfPartner1, NameOfPartner2


appropriately instantiated of course. Also separate the Redex code copied from problem set 3 with a line of the shape ";; " followed by 77 "="; for sub-problems of problem set 5 use "-". Each gives you a width of 80 chars. Stick to this line width for all of your code; if you also follow DrRacket’s indentation rules, it ensures some basic readability.