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A note on the non-commutative neutrix product of distributions

Authors:

Emin Özçag

Affiliation:

(1) Department of Mathematics, University of Hacettepe, 06532-Beytepe, Ankara, Turkey

Abstract:

The distributionF(x ₊, −r) Inx₊ andF(x ₋, −s) corresponding to the functionsx ₊ ^−r lnx₊ andx ₋ ^−s respectively are defined by the equations

$leftlangle {F(x_ + , - r)ln x_ + ,phi (x)} rightrangle = int_0^infty {x^{ - r} ln xleft[ {phi (x) - sumlimits_{i = 0}^{r - 2} {frac{{phi ^{(i)} (0)}}{{i!}}x^i frac{{phi ^{(i)} (0)}}{{(r - 1)!}}H(1 - x)x^{r - 1} } } right]dx}$

(1) and

$leftlangle {F(x_ + , - s),phi (x)} rightrangle = int_0^infty {x^{ - s} left[ {phi (x) - sumlimits_{i = 0}^{s - 2} {frac{{phi ^{(i)} (0)}}{{i!}}( - x^i )frac{{phi ^{(s - 1)} (0)}}{{(s - 1)!}}H(1 - x)x^{s - 1} } } right]dx}$

(2) whereH(x) denotes the Heaviside function. In this paper, using the concept of the neutrix limit due to J G van der Corput [1], we evaluate the non-commutative neutrix product of distributionsF(x ₊, −r) lnx₊ andF(x ₋, −s). The formulae for the neutrix productsF(x ₊, −r) lnx ₊ ox ₋ ^−s, x₊ ^−r lnx₊ ox ₋ ^−s andx ₋ ^−s o F(x₊, −r) lnx₊ are also given forr, s = 1, 2, ...

Keywords:

Distribution delta function neutrix neutrix limit neutrix product

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