We define and investigate the class τmN(x) of functions provided with the notion of m-approximate Nth degree Taylor polynomial at x∈ Rn. In particular we compare τmN(x) with the class tk,p(x) of functions having the derivative of order k in the Lp sense at x (Ziemer in Weakly differentiable functions. GTM, Springer, Berlin, 1989, Section 3.5). We apply this machinery to prove several properties of Sobolev functions, such as a new sectional superdensity property.
m-approximate Taylor polynomial / Delladio, S.. - In: MANUSCRIPTA MATHEMATICA. - ISSN 0025-2611. - 163:3-4(2020), pp. 481-505. [10.1007/s00229-019-01167-0]
m-approximate Taylor polynomial
Delladio S.
2020-01-01
Abstract
We define and investigate the class τmN(x) of functions provided with the notion of m-approximate Nth degree Taylor polynomial at x∈ Rn. In particular we compare τmN(x) with the class tk,p(x) of functions having the derivative of order k in the Lp sense at x (Ziemer in Weakly differentiable functions. GTM, Springer, Berlin, 1989, Section 3.5). We apply this machinery to prove several properties of Sobolev functions, such as a new sectional superdensity property.File in questo prodotto:
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