| 41. | He helped found both modern mathematical logic and analytic philosophy.
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| 42. | Merging mathematical logic with philosophical logic would only create confusion.
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| 43. | In contemporary mathematical logic, the signature varies by application.
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| 44. | He worked in mathematical logic and class field theory.
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| 45. | Logical independence is a well-known phenomenon in Mathematical Logic.
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| 46. | Model theory applies the methods of mathematical logic to study models of particular mathematical theories.
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| 47. | Natural language and mathematical logic are both based on asserting some statements to be true.
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| 48. | Sheffer was a dedicated teacher of mathematical logic.
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| 49. | Some propositions, Godel showed, can be neither proved nor disproved within the confines of mathematical logic.
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| 50. | It provides the foundation of modern mathematical logic.
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