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Issue No. 01 - January (1984 vol. 6)
ISSN: 0162-8828
pp: 122-123
Ruth Shapira , Cognitive Information Processing Group, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139. Rafael, Haifa, Israel.
This correspondence debates a theorem formulated by K. Sugihara in a recent publication. The theorem deals with the mathematical structures of line drawings, and serves as a basis for a substantial part of the paper. This note claims that the theorem as formulated is not valid. The claim is substantiated by a counterexample.

R. Shapira, "A Note on Sugihara's Claim," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 6, no. , pp. 122-123, 1984.
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