Undo revision 1168482 by Aschlafly (talk): absolutely rigorous
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:<math>e^{i\pi} + 1 = 0 \!</math>
:<math>e^{i\pi} + 1 = 0 \!</math>
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This is called the most beautiful equation in mathematics, because it equates the five most common mathematical constants in a perfectly elegant manner. Notice, however, its lack of rigor because it essentially depends on the above arbitrary definition for using the imaginary square root of -1 as an exponent.
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This is called the most beautiful equation in mathematics, because it equates the five most common mathematical constants in a perfectly elegant manner.