Mathematics (n.) is a subject identical with logic.
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Mathematics (n.) is the construction and exploration of formal systems. Insofar as it is 'formal', it has no necessary relation to anything in 'the real world'.
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Mathematics (n.) is the practice of deriving theorems from axioms -nothing more, nothing less.
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Mathematics (n.) is the subject in which we never know what we are talking about, nor whether what we are saying is true.
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Mathematics (n.) is possessed not only of truth, but of supreme beauty; a beauty cold and austere, like that of sculpture.