Euler integration over definable functions. (arXiv:0909.4054v1 [math.GN])

We extend the theory of Euler integration from the class of constructible
functions to that of "tame" real-valued functions (definable with respect to an
o-minimal structure). The corresponding integral operator has some unusual
defects (it is not a linear operator); however, it has a compelling
Morse-theoretic interpretation. In addition, we show that it is an appropriate
setting in which to do numerical analysis of Euler integrals, with applications
to incomplete and uncertain data in sensor networks.

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Original source : http://arxiv.org/abs/0909.4054...