| 1. | Consider the open balls centered upon a common point, with any radius.
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| 2. | With help from Stacey, the babies open balls, bathing suits, dolls and books.
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| 3. | The open balls of a metric space are a unions of open balls.
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| 4. | The open balls of a metric space are a unions of open balls.
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| 5. | The closure of the open ball is usually denoted } }.
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| 6. | For example, an open ball is a contractible manifold.
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| 7. | He also complained about the Wilson U . S Open balls being used in the tournament.
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| 8. | This definition generalises to topological spaces by replacing " open ball " with " open set ".
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| 9. | An " n "-dimensional open cell is a topological space that is homeomorphic to the " n "-dimensional open ball.
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| 10. | The set of velocities satisfying is an open ball in and is called the space of "'admissible velocities "'in the literature.
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