X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=hints%2Fassignment_7_hint_1.mdwn;h=0d67cd91a9ed4d95f9cbc519d5c662250a26fc0c;hp=745eb99261df79745e4ca3a09ed7bf21bd4374b0;hb=fbf7eb4bd166b7bdf656f1c5f12528a39954dc51;hpb=48c6e643b5deb62c34c84e0190466be34c00283b
diff --git a/hints/assignment_7_hint_1.mdwn b/hints/assignment_7_hint_1.mdwn
index 745eb992..0d67cd91 100644
--- a/hints/assignment_7_hint_1.mdwn
+++ b/hints/assignment_7_hint_1.mdwn
@@ -1,16 +1,15 @@
-* Where Groenendijk and Stockhof and Veltman (GSV) say "peg", that translates in our terminology into a new "reference cell" or "location" in a store.
-* Where they represent pegs as natural numbers, that corresponds to our representing locations in a store by their indexes in the store.
+* Where Groenendijk, Stockhof and Veltman (GS&V) say "peg", that translates in our terminology into a new "reference cell" or "location" in a store.
-* Where they work with sets of blahs, you should generally think in terms of functions from blahs to bools.
+* Where they represent pegs as natural numbers, that corresponds to our representing locations in a store by their indexes in the store.
-* Where they say "reference system," which they use the leter `r` for, that corresponds to what we've been calling "assignments", and use the letter `g` for.
+* Where they say "reference system," which they use the leter `r` for, that corresponds to what we've been calling "assignments", and have been using the letter `g` for.
* Where they say `r[x/n]`, that's our `g{x:=n}`.
* Their function `g`, which assigns objects from the domain to pegs, corresponds to our store function, which assigns entities to indexes.
-* What does their `∃x`

correspond to in the framework we've been talking about?
+* At several places they talk about some things being *real extensions* of other things. This confused me at first, because they don't ever define a notion of "real extension." (They do define what they mean by "an extension.") At one point in the paper, it emerges that what they mean is what I'd call a *proper extension*: an extension which isn't identical to the original.
* [More hints](/hints/assignment_7_hint_2).