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The Computer Journal 1998 41(6):357-362; doi:10.1093/comjnl/41.6.357
© 1998 by British Computer Society
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Why Church's Thesis Still Holds. Some Notes on Peter Wegner's Tracts on Interaction and Computability

M. Prasse and P. Rittgen *

Institute of Business Informatics, University Koblenz-Landau, Rheinau 1, D-56075 Koblenz, Germany Email: prasse{at}uni-koblenz.de

Peter Wegner's definition of computability differs markedly from the classical term as established by Church, Kleene, Markov, Post, Turing et al. Wegner identifies interaction as the main feature of today's systems which is lacking in the classical treatment of computability. We compare the different approaches and argue whether or not Wegner's criticism is appropriate. Taking into account the major arguments from the literature, we show that Church's thesis still holds.

Received November 28, 1997. revised August 4, 1998.

* Author to whom correspondence should be addressed.


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