Lecture Notes for 427: Part 2
نویسنده
چکیده
We all know the solution: multiplication is always assumed to have precedence over addition, so we read this as a+ (b · c). 1.2. Remark. A ring without identity is one in which (R, ·) is merely assumed to be a semi-group, i.e., there is no multiplicative identity. (Some people call this a rng.) In many introductory textbooks, “ring” is defined to mean what we are calling a “ring without identity”. Which is odd, since such textbooks have few or no examples of rings without identity, and for the most part, “ring” means the definition I am using for most mathematicians.
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Cmsc 427 Computer Graphics
Copyright, David M. Mount, 2013 Dept. of Computer Science, University of Maryland, College Park, MD, 20742. These lecture notes were prepared by David Mount for the course CMSC 427, Computer Graphics, at the University of Maryland. Permission to use, copy, modify, and distribute these notes for educational purposes and without fee is hereby granted, provided that this copyright notice appear in...
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