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Advanced Calculus and Analysis Lecture notes from the University of Aberdeen for a first course in Analysis. http://www.maths.abdn.ac.uk/~igc/tch/ma2001/notes/notes.html
Harmonic Analysis Maintained by Terence Tao, UCLA. Lists events, personal pages, preprints, research groups, other links. http://www.math.ucla.edu/~tao/harmonic/
An Introduction to the Gauge Integral Discusses the properties of an alternative integration theory, and its relationship with the Riemann and Lebesgue integrals. http://www.math.vanderbilt.edu/~schectex/ccc/gauge/
On the Atiyah-Singer Index Theorem An overview of the Atiyah-Singer Index Theorem that places the result in historical and mathematical context. [PDF] http://www.abelprisen.no/nedlastning/2004/popular_english_2004.pdf
Working Group on Generalized Convexity An interdisciplinary group of scholars from operations research, economics, engineering, applied sciences, mathematics, statistics, among others, with an interest in generalizations of the classical concept of a convex function. http://www.ec.unipi.it/~genconv/