Re: [Hol-info] More on set comprehensions

2014-01-03 Thread Michael Norrish
On 4 Jan 2014, at 6:17 pm, Bill Richter wrote: > To see this, think of a mathematical function f: X ---> Y between sets and a > subset A of X. Then we speak of the image f(A), which is a subset of Y, > defined by > > f(A) = {f(a) | a ∈ A}. > > But what does that mean? I claim it's just a shor

Re: [Hol-info] More on set comprehensions

2014-01-03 Thread Bill Richter
Rob, thanks for correcting my variable capture mistake: In this case, the two instances of x have different types and there is no variable capture, since two variables with the same name but different types are considered to be distinct in the logic. Right, and you have to do the type in

[Hol-info] CiE 2014: Language, Life, Limits - Budapest, 23-27 June 2014 - 3rd CfP

2014-01-03 Thread S B Cooper
Subject: CiE 2014: Language, Life, Limits - Budapest, 23-27 June 2014 3rd CALL FOR PAPERS: CiE 2014: Language, Life, Limits Budapest, Hungary June 23 - 27, 2014 http://cie2014.inf.elte.hu IMPORTANT DAT