Digitale Medien
Springer
Aequationes mathematicae
36 (1988), S. 251-267
ISSN:
1420-8903
Schlagwort(e):
Primary 39B40
;
Secondary 22A30, 13J99
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Mathematik
Notizen:
Summary On a given standard thread (J, ∘), all operations * over which ∘ distributes are determined and among such operations those which are continuous are identified. A standard thread is a topological semigroup on a closed real number interval whose largest element is an identity and smallest element is a zero for the semigroup. A quotient operation can be defined forx ⩾ y on a standard thread by $$\frac{y}{x}: = \min \{ w \in J|y = x \circ w\} .$$ The operations * in question are shown to be generated by pairs of functionsp, q:J → J such that $$x * y = \left\{ {\begin{array}{*{20}c} {x \circ q\left( {\frac{y}{x}} \right) if x \geqslant y} \\ {p\left( {\frac{x}{y}} \right) \circ y if x \leqslant y.} \\ \end{array} } \right.$$ Those functionsp andq which generate operations * over which ∘ distributes are completely identified.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01836095
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