Produced by Charles Wells Revised 2015-10-19 Introduction to this website website TOC website index blog
The concept of function in mathematics is as important as any mathematical idea. The mathematician's concept of function includes the kinds of functions you studied in calculus but is much more abstract and general.
Like every part of abstractmath, the chapter on functions is designed to get you started thinking about functions. It is no way complete. Wikipedia has much more complete coverage of mathematical functions, scattered over many articles.
This chapter has five sections:
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