On rational quasi-multiplicative families of operators
β Scribed by J. Aczel
- Publisher
- Elsevier Science
- Year
- 1967
- Tongue
- English
- Weight
- 249 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0022-2496
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π SIMILAR VOLUMES
Given a continuous semiring A and a collection α’ of semiring morphisms mapping the elements of A into finite matrices with entries in A we define α’-closed semirings. These are fully rationally closed semirings that are closed under the following operation: each morphism in α’ maps an element of the α’
## MSC (2010) 03B50, 03C05 We extend the concept of quasi-variety of first-order models from classical logic to multiple valued logic (MVL) and study the relationship between quasi-varieties and existence of initial models in MVL. We define a concept of 'Horn sentence' in MVL and based upon our st
## Abstract We consider families of generalized Dirac operators __D__~__t__~ with constant principal symbol and constant essential spectrum such that the endpoints are gauge equivalent, i.e., __D__~1~ = __W__\*__D__~0~__W__. The spectral flow un any gap in the essential spectrum we express as the F