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abstract algebra - Prove that 1+1=2 - Mathematics Stack Exchange Possible Duplicate: How do I convince someone that $1+1=2$ may not necessarily be true? I once read that some mathematicians provided a very length proof of $1+1=2$ Can you think of some way to
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How can 1+1=3 be possible? - Mathematics Stack Exchange So that's the "proof" The failure is at step 5, where you say that pq = pr p q = p r implies that q = r q = r; that's true only if you know p p is nonzero For instance 0 ⋅ 5 = 0 ⋅ 7 0 ⋅ 5 = 0 ⋅ 7, but that doesn't let you conclude that 5 = 7 5 = 7, because 0 0 has no multiplicative inverse In your case, the number b − a b − a is playing the role of p p, and because b b and a a
what is 1 - 1 2 + 1 3 - 1 4 + 1 5 - 1 6 + 1 7 - 1 8 +1 9 Please provide additional context, which ideally explains why the question is relevant to you and our community Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc
What is the integral of 1 x? - Mathematics Stack Exchange 16 Answers to the question of the integral of 1 x are all based on an implicit assumption that the upper and lower limits of the integral are both positive real numbers If we allow more generality, we find an interesting paradox For instance, suppose the limits on the integral are from − A to + A where A is a real, positive number