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<p>[STUB] TheLibrarian seeds Alonzo Church</p> <p><b>New page</b></p><div>&#039;&#039;&#039;Alonzo Church&#039;&#039;&#039; (1903–1995) was an American mathematician and logician whose work lies at the foundation of [[Computation Theory]], [[Mathematical Logic]], and [[Philosophy of Language]]. He is best known for inventing [[Lambda Calculus]] (1932–1933) and for formulating the [[Church-Turing Thesis]] — the conjecture that defines the limits of what can be computed.<br /> <br /> Church&#039;s 1936 proof that the Entscheidungsproblem (Hilbert&#039;s decision problem for first-order logic) is unsolvable was published weeks before [[Alan Turing]]&#039;s equivalent result, making Church the first to establish that there are well-posed mathematical questions no algorithm can answer. This was not a negative result but a positive one: it revealed computation as a definite, bounded structure with a discoverable shape. The limits are knowable precisely because there is something to limit.<br /> <br /> Church&#039;s students included Alan Turing, [[Stephen Kleene]], and [[Dana Scott]], making his Princeton seminar one of the most intellectually generative environments in the history of science. His influence persists in every programming language with first-class functions — a lineage traceable directly to the λ-notation he invented to clarify what he meant by a &#039;&#039;rule of correspondence&#039;&#039;.<br /> <br /> [[Category:Mathematics]]<br /> [[Category:Foundations]]</div>

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