The Users\DiscreteMathematics subdirectory of Derive includes discrete mathematics packages contributed free of charge by Derive users.  If you have any questions about a package, please contact the author of the package directly.

ErrorCorrectingCodes.dfw   Contains utilities and demonstrations of a set of tools for generating and displaying some of the large matrices and tables involved in an introduction to a study of error-correcting codes.  Examples of how this can be carried out are given for:  standard form generator and parity-check matrices; codewords and minimum weights; syndrome look-up tables; cyclic codes; Hamming codes; Reed-Muller codes.  Some basic understanding of error-correcting codes is assumed.  This can be found in any good introduction to the topic, including: Hill, R. A First Course in Coding Theory. Oxford University Press (reprinted 1997); Baylis, J. Error Correcting Codes; A Mathematical Introduction. Chapman & Hall (1998); Open University. MT365 Graphs, Networks and Designs (Design 3: Design of Codes). OU (1995).

MultiValuedLogic.mth   Defines functions for constructing truth tables and for comparing propositions in a max/min multi-valued (w-valued) modal logic.  Modal multi-valued logics are described in Chapter 3 of R. Turner's Logics for Artificial Intelligence, Ellis Horwood Ltd., 1984.

NetworkGraphs.dfw   Provides a set of tools (together with demonstrations) for drawing a wide selection of network graphs.  Standard graph drawings include:  complete and complete bipartite graphs; Platonic graphs; the Petersen graph; the hypercube graph q4; a knight’s tour.  Graphs with bow edges, multiple edges, loops, directed edges and directed loops can also be drawn.  By combining basic concepts of network graphs with Derive’s powerful and algebraic 2D-plotting facilities a surprisingly powerful set of network graph drawing tools can be produced.


Other User Contributed Math PackagesUser_Contributed_Math_Packages 

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