X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=week1.mdwn;h=6fadd1fa5d542cd0f20dbcbae37d00f99d3a9d29;hp=316cfa44fd9c7e5ac231ece21514d5837636c6d1;hb=8a13569351741eaad4b9990b7e21b7f92ae37ff9;hpb=be4f2e949a6cb783561a2bbdbd3ba4d66dadec3f diff --git a/week1.mdwn b/week1.mdwn index 316cfa44..6fadd1fa 100644 --- a/week1.mdwn +++ b/week1.mdwn @@ -114,19 +114,19 @@ The lambda calculus we'll be focusing on for the first part of the course has no Here is its syntax:
- **Variables**: `x`, `y`, `z`, ... +**Variables**: `x`, `y`, `z`, ...
Each variable is an expression. For any expressions M and N and variable a, the following are also expressions:
- **Abstract**: (λa M) +**Abstract**: (λa M)
We'll tend to write (λa M) as just `( \a M )`.
- **Application**: `(M N)` +**Application**: `(M N)`
Some authors reserve the term "term" for just variables and abstracts. We won't participate in that convention; we'll probably just say "term" and "expression" indiscriminately for expressions of any of these three forms.