
Accession Number : AD0701721
Title : AN ONLINE SYMBOLIC MATHEMATICS SYSTEM USING HANDPRINTED TWODIMENSIONAL NOTATION,
Corporate Author : RAND CORP SANTA MONICA CALIF
Personal Author(s) : Blackwell,F. W. ; Anderson,R. H.
Report Date : JAN 1970
Pagination or Media Count : 25
Abstract : A description of a system being developed for the online manipulation of symbolic mathematical expressions is given. The user handprints his formulas, and the mathematical rules to be followed, on a Rand Tablet in ordinary twodimensional mathematical notation. The system recognizes the characters and interprets the whole expression from the spatial relationships, in accordance with a previously input syntax. The user at his console directs the computer to apply various rules of transformation that he has input. He maintains as much control over the transformations and the displays as he desires. Because the parser is entirely syntaxdirected, the user can solve a wide variety of problems and can introduce novel operators as long as he declares their properties. Syntaxes that handle matrix notation and arbitrary directedline graphs have been written and tested on the parser. (Author)
Descriptors : (*COMPUTER PROGRAMMING, SYMBOLS), INPUT OUTPUT DEVICES, CHARACTER RECOGNITION, TRANSFORMATIONS(MATHEMATICS)
Subject Categories : Computer Programming and Software
Computer Hardware
Distribution Statement : APPROVED FOR PUBLIC RELEASE