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Extensive bibliography on computability and recursion theory, maintained by Peter Cholak.
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A dictionary definition of the subject.
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Information on this site includes a Bibliographic Database for Computability Theory, a list of Open Questions in Recursion Theory as well as links to many researchers working in the field. Maintained by Peter Cholak.
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An online course on complexity.
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The CCA Network provides some useful information for researchers working in the field of computability and complexity in analysis.
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The study of computation beyond that defined by the Turing machine, also known as super-Turing, non-standard or non-recursive computation. Links to people, resources and discussions.
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Wikipedia article.
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Notes from the class taught by Prof. Sacks in the Spring of 1998.
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Compiled by Theodore A. Slaman, Berkeley [TeX/PDF].
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This site contains information about Problem Solving Environments (PSEs), research, publications, and information on topics related to PSEs.
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Article from the Stanford Encyclopedia.