Geodesic
A topological application of flat morasses
R. W. Knight1
1 Mathematical Institute 24–29 St Giles, Oxford, UK
Fundamenta Mathematicae, Tome 194 (2007) no. 1, pp. 45-66

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We define combinatorial structures which we refer to as flat morasses, and use them to construct a Lindelöf space with points $G_\delta$ of cardinality $\aleph_\omega$, consistent with GCH. The construction reveals, it is hoped, that flat morasses are a tool worth adding to the kit of any user of set theory.
DOI : 10.4064/fm194-1-3
Keywords: define combinatorial structures which refer flat morasses construct lindel space points delta cardinality aleph omega consistent gch construction reveals hoped flat morasses tool worth adding kit user set theory

R. W. Knight 1

1 Mathematical Institute 24–29 St Giles, Oxford, UK 
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R. W. Knight. A topological application of flat morasses. Fundamenta Mathematicae, Tome 194 (2007) no. 1, pp. 45-66. doi: 10.4064/fm194-1-3

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