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This is an old revision of this page, as edited by ThePinkGerbil (talk | contribs) at 17:46, 22 June 2020 (→‎Non-referring reference). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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"His discovery of the lambda calculus."

Is "discovery" the right word to say? Talam 14:36, 16 March 2006 (UTC)[reply]

This brings us to the old problem of Realism which raises the question, "Did Lambda Calculus always have a reality in the external world and was only brought to our notice recently by Church's writings?" According to Mathematical Realists, Lambda Calculus has always existed in the world apart from human brains. Church's brain discovered it and consequently it became a part of the (Ideal, subjective), internal operations of many human brains. In a nutshell, is it real/objective/external or ideal/subjective/internal?Lestrade (talk) 03:30, 28 January 2008 (UTC)lestrade[reply]
Not to interrupt the display of pretentiousness or anything, but lambda calculus was developed as a notation for talking about mathematical objects (in particular, functions). If there is an issue of realism here, it is a rather implausible realism about formal languages, not a traditional form of realism about mathematical objects. 145.18.22.149 (talk) 15:31, 16 February 2009 (UTC)[reply]

Best known for?

The Introduction mentions the Church-Rosser Theorem (counfluence of lambda calculus) among his major achievements, but doesn't mention Church's Theorem (undecidability of predicate logic); in the main text the situation is the opposite. I would say the Introduction ought to be brought in line with the main text in this regard. Predicate logic is the _lingua franca_ of symbolic logic, whereas the lambda calculus -- while by no means unimportant -- is but one of many equally well-known theoretical models of computation. Nastor (talk) 14:10, 22 May 2009 (UTC)[reply]

Church's theorem

Is it correct for Church's theorem to link to the Entscheidungsproblem, since Church's theorem relates to the undecidability of the Entscheidungsproblem? Does Church's theorem warrant a separate article? Froskoy (talk) 08:21, 5 February 2013 (UTC)[reply]

The Entscheidungsproblem isn't undecidable (that's the wrong word) it is unsolvable.
I've fixed that. — Preceding unsigned comment added by ThePinkGerbil (talk • contribs) 17:40, 22 June 2020 (UTC)[reply]

Alonzo

Alonzo and his uncle might have been named after the small town in Kentucky, in America. — Preceding unsigned comment added by 86.160.51.140 (talk) 09:18, 28 May 2015 (UTC)[reply]

Berlinski

What reason is there to think that *the linked to* David Berlinski was a student of Church's? 81.135.40.150 (talk) 13:55, 25 April 2017 (UTC)[reply]

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Non-referring reference

There is a reference: 'see e.g. Church 1970', but who knows what it is!? There are five of his works mentioned:

Alonzo Church, Introduction to Mathematical Logic (ISBN 978-0-691-02906-1)[15]

Alonzo Church, The Calculi of Lambda-Conversion (ISBN 978-0-691-08394-0)[16]

Alonzo Church, A Bibliography of Symbolic Logic, 1666–1935 (ISBN 978-0-8218-0084-3)

Alonzo Church interviewed by William Aspray on 17 May 1984. The Princeton Mathematics Community in the 1930s: An Oral-History Project, transcript number 5.

Church, A. (1950). "On Carnap's Analysis of Statements of Assertion and Belief". The Journal of Symbolic Logic. 10 (5): 97–99. doi:10.2307/3326684. JSTOR 3326684.

and not one of them was published in 1970. ThePinkGerbil (talk) 17:43, 22 June 2020 (UTC)[reply]

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