We study L p -theory of second-order elliptic divergence-type operators with measurable coefficients. To this end, we introduce a new method of constructing positive C 0 -semigroups on L p associated with sesquilinear (not necessarily sectorial) forms in L 2 . A precise condition ensuring that the e
On the extension of measures with values in partially ordered semigroups
✍ Scribed by Zdena Riečanová; Ivica Rosová
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 422 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
✦ Synopsis
Clearly the sum as well as the maximum of two real numbers can be presented as a semigroup operation. So the measure with values in a partially ordered semigroup is a common generalization of additive or subadditive and maxitive measures (see Section 4). The extension of such measures we realize by the transfinite induction (see also [ 2 ] ) and we use a result of [l] for real valued functions.
📜 SIMILAR VOLUMES
We study positive C 0 -semigroups on L p associated with second-order uniformly elliptic divergence-type operators with singular lower-order terms, subject to a wide class of boundary conditions. We obtain an interval ðp min ; p max Þ in the L p -scale where these semigroups can be defined, includin
## Abstract This paper presents theoretical foundations for the description of preferences in multiple criteria decision analysis models using quantitative estimates of the relative importance of criteria. It is assumed that not only the values of criteria but also the differences of such values ar