| 1. | The permanents corresponding to the smallest projective planes have been calculated.
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| 2. | These lines are now interpreted as points in the projective plane.
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| 3. | Any finite projective plane of order is an ( ( configuration.
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| 4. | Consider a projective plane P . Let L be a line.
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| 5. | Projectivization of the Euclidean plane produced the real projective plane.
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| 6. | Any connected sum involving a real projective plane is nonorientable.
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| 7. | See projective plane for the basics of projective geometry in two dimensions.
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| 8. | The result is orientable, while the real projective plane is not.
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| 9. | If the projective plane is transitively on the lines of the plane.
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| 10. | There is a bijection between and in a projective plane.
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