| 41. | It consists of fifteen propositions ( lemmas ) on circles.
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| 42. | The generalized version of the lemma is stated as follows.
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| 43. | The relation between them is given by the fundamental lemma.
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| 44. | The doubling argument reminds me of the Vitali covering lemma.
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| 45. | Lemma 2-2, obviously follows from Theorem 2-1.
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| 46. | But it's still my point : The lemma is misleading.
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| 47. | We would discriminate this position by using that definite type of lemma.
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| 48. | We should choose the lemma as it is discussed in scientific research.
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| 49. | We employ the Complex Morse Lemma to change the variables of integration.
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| 50. | Now we prove two lemmas about the above two concepts.
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