| 41. | Where the first integral is just above the real line and the second just below.
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| 42. | Consider the Borel ?-algebra on the real line.
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| 43. | Of course it is on a real line.
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| 44. | Consider the real line with its ordinary topology.
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| 45. | The open intervals coincide with the open sets of the real line in its standard topology.
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| 46. | Remember that suggestion that the real line was special compared to the plane and higher dimensions?
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| 47. | The existence of these strategies implies structural properties of the real line and other Polish spaces.
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| 48. | The real line up pits Dallas against Pittsburgh.
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| 49. | Its spectrum is the entire real line.
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| 50. | But what's the real line here?
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