Week 13: Last week of class

December 5th, the last day of class for the fall semester. We had our exam preparation and a handout on Weds from Danny with all the topics that we should be studying for the upcoming exam on Weds. The test today was better than term test 2 for myself and hopefully we'll know where we're standing before our exam as soon as the marks are posted. Before ending my post, I was thinking about this example of context free grammar I came across the other day:

Let L₃ be the set of algebraic expressions involving identifiers x and y, operations + and * and left and right parentheses. Then L₃ is a context-free language. For the following context-free grammar G₃ = <>3 , ₃, S , P₃ > generates L₃ :
V₃ = { S } , ₃ = { x , y , ( , ) , + , * } and P₃ = { S -> ( S + S ) , S -> S*S , S -> x , S -> y }

Reference: http://www.cs.odu.edu/~toida/nerzic/390teched/cfl/cfg.html

I'm just curious how P3 = all that chunk? If Danny is reading this post, please give me some feedback, thanks!

Anyway, just wanted to take the chance here to thank Danny for being such an amazing prof for both of my 165 and 236 course. I wonder what courses will be taught in the winter term by Danny.