| 41. | Half-spaces ( open or closed ) are affine convex cones.
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| 42. | What are affine varieties and how do they relate with grobner bases?
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| 43. | The curve ? is uniquely determined up to a special affine transformation.
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| 44. | Much like affine connections, projective connections also define geodesics.
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| 45. | In each affine coordinate domain the coordinate vector fields form a web.
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| 46. | Now, how much is this " like the affine case "?
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| 47. | The affine focal set need not be made up of smooth hypersurfaces.
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| 48. | Ordered geometry is a common foundation of both absolute and affine geometry.
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| 49. | If the affine compensated image is too dissimilar the feature is dropped.
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| 50. | Cayley-Klein Voronoi diagrams are affine diagrams with linear hyperplane bisectors.
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