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Well-definition
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High Quality Content by WIKIPEDIA articles! In mathematics, well-definition is a mathematical or logical definition of a certain concept or object (a function, a property, a relation, etc.) which uses a set of base axioms in an entirely unambiguous way and satisfies the properties it is required to satisfy. Usually definitions are stated unambiguously, and it is clear they satisfy the required properties. Sometimes however, it is economical to state a definition in terms of an arbitrary choice; one then has to check that the definition is independent of that choice. On other occasions, the required properties might not all be obvious; one then has to verify them. These issues commonly arise in the definition of functions. For instance, in group theory, the term well-defined is often used when dealing with cosets, where a function on a coset space is often defined by choosing a representative: it is then as important that we check that we get the same result regardless of which representative of the coset we choose as it is that we always get the same result when we perform arithmetical operations (e.g., whenever we add 2 and 3, we always get the answer 5).
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786131184369
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- EAN 9786131184369
- Format Fachbuch
- Titel Well-definition
- Herausgeber Betascript Publishing
- Anzahl Seiten 92
- Genre Mathematik
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