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From: yoann padioleau <padator@wanadoo.fr>
To: Oliver Bandel <oliver@first.in-berlin.de>, caml-list@inria.fr
Subject: Re: [Caml-list] Lambda-Term (f x) (x f) translated to Ocaml?
Date: Tue, 28 Mar 2006 02:44:55 +0200 (CEST)	[thread overview]
Message-ID: <24000351.1143506695382.JavaMail.www@wwinf1608> (raw)


> Hello,
> 
> I'm not firm in lambda calculus, what is the lambda-term
> in the subject translated to OCaml?
> 
> Is this possible?

the ocaml interpreter dont want this definition

let g f x = (f x) (x f)

and shout: 
  this expression has type ('a -> 'b) -> 'c -> 'd but is here used with type 'a

I guess that this is not a lambda term that can be typed.
There are many of them. A famous one is the Y combinator.
The _typed_ lambda calculus does not allow all the lambda terms
of the (normal) lambda calculus.

> 
> P.S.: Also welcome is a "Lambda-Calculus for Dummies" recommendation
>       on literature (or web-links). ;-)
> 

I liked very much:
 G.J.Michaelson, An Introduction to Functional Programming Through Lambda Calculus, Addison-Wesley
now available online from
 http://www.macs.hw.ac.uk/~greg/books.html

> 


             reply	other threads:[~2006-03-28  0:44 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-28  0:44 yoann padioleau [this message]
2006-03-28  0:55 ` Marius Nita
2006-03-28  1:11 ` Oliver Bandel
2006-03-31 21:01 ` Thomas Fischbacher
2006-03-31 23:53   ` yoann padioleau
  -- strict thread matches above, loose matches on Subject: below --
2006-03-28  0:07 Oliver Bandel
2006-03-31 20:58 ` [Caml-list] " Thomas Fischbacher

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