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Rigid sets

Published online by Cambridge University Press:  17 April 2009

Luca Guerrini  and
Pier Luigi Papini
Luca Guerrini
Affiliation:
Università di Bologna, Dipartimento di Matematica per le Scienze Economiche e Sociali, Viale Filopanti 5, 40126 Bologna, Italy e-mail: guerrini@ecosta.unibo.it
Pier Luigi Papini
Affiliation:
Università di Bologna, Dipartimento di Matematica, Piazza di Porta S. Donato 5, 40126 Bologna, Italy e-mail: papini@dm.unibo.it
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The term “rigid set” appears often in the literature in different contexts and with different meanings. In many cases the notions are unrelated, while in other they refer to related facts. Here we study infinite sets which are rigid according to [2] and analyse the relationship with the notion of rigidity used in [1]. We make several remarks, summarise different results in the area and prove a few new results.

Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 66 , Issue 2 , October 2002 , pp. 193 - 205
Copyright
Copyright © Australian Mathematical Society 2002

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