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Intersections of α-spaces
Published online by Cambridge University Press: 09 April 2009
Abstract
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Let 
be an infinite r.e. repère, 
an infinite dimensional r.e. space such that 
≦ L(
). A condition is derived that is both necessary and sufficient for the existence of an infinite subset β ⊂ 
such that L(β)∪
is not an α-space. Examples which satisfy this condition are exhibited, proving that the class of α-spaces is not closed under intersections.
Information
- Type
- Research Article
- Information
- Journal of the Australian Mathematical Society , Volume 20 , Issue 4 , November 1975 , pp. 398 - 418
- Copyright
- Copyright © Australian Mathematical Society 1975
References
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