On the Topological and Uniform Structure of Diversities
Diversities have recently been developed as multiway metrics admitting clear and useful notions of hyperconvexity and tight span. In this note, we consider the analytical properties of diversities, in particular the generalizations of uniform continuity, uniform convergence, Cauchy sequences, and co...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Function Spaces and Applications |
| Online Access: | http://dx.doi.org/10.1155/2013/675057 |
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| _version_ | 1832556009081536512 |
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| author | Andrew Poelstra |
| author_facet | Andrew Poelstra |
| author_sort | Andrew Poelstra |
| collection | DOAJ |
| description | Diversities have recently been developed as multiway metrics admitting clear and useful notions of hyperconvexity and tight span. In this note, we consider the analytical properties of diversities, in particular the generalizations of uniform continuity, uniform convergence, Cauchy
sequences, and completeness to diversities. We develop conformities, a diversity analogue of uniform spaces, which abstract these concepts in the metric case. We show that much of the theory of uniform spaces admits a natural analogue in this new structure; for example, conformities can be defined either axiomatically or in terms of uniformly continuous pseudodiversities. Just as diversities can be restricted to metrics, conformities can be restricted to uniformities. We find that these two notions of restriction, which are functors in the appropriate categories, are related by a natural transformation. |
| format | Article |
| id | doaj-art-a0c55a1155854370b82b0be39c2ab725 |
| institution | Kabale University |
| issn | 0972-6802 1758-4965 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Function Spaces and Applications |
| spelling | doaj-art-a0c55a1155854370b82b0be39c2ab7252025-02-03T05:46:34ZengWileyJournal of Function Spaces and Applications0972-68021758-49652013-01-01201310.1155/2013/675057675057On the Topological and Uniform Structure of DiversitiesAndrew Poelstra0Simon Fraser University, Burnaby, BC, V5A 1S6, CanadaDiversities have recently been developed as multiway metrics admitting clear and useful notions of hyperconvexity and tight span. In this note, we consider the analytical properties of diversities, in particular the generalizations of uniform continuity, uniform convergence, Cauchy sequences, and completeness to diversities. We develop conformities, a diversity analogue of uniform spaces, which abstract these concepts in the metric case. We show that much of the theory of uniform spaces admits a natural analogue in this new structure; for example, conformities can be defined either axiomatically or in terms of uniformly continuous pseudodiversities. Just as diversities can be restricted to metrics, conformities can be restricted to uniformities. We find that these two notions of restriction, which are functors in the appropriate categories, are related by a natural transformation.http://dx.doi.org/10.1155/2013/675057 |
| spellingShingle | Andrew Poelstra On the Topological and Uniform Structure of Diversities Journal of Function Spaces and Applications |
| title | On the Topological and Uniform Structure of Diversities |
| title_full | On the Topological and Uniform Structure of Diversities |
| title_fullStr | On the Topological and Uniform Structure of Diversities |
| title_full_unstemmed | On the Topological and Uniform Structure of Diversities |
| title_short | On the Topological and Uniform Structure of Diversities |
| title_sort | on the topological and uniform structure of diversities |
| url | http://dx.doi.org/10.1155/2013/675057 |
| work_keys_str_mv | AT andrewpoelstra onthetopologicalanduniformstructureofdiversities |