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Nov
15
awarded  Supporter
Nov
5
comment An example for a calculation where imaginary numbers are used but don't occur in the question or the solution.
R*e^iphi * e^ialpha means rotating a complex number x+iy with cos_a +i sin_a, where |x+iy|=R
Oct
31
awarded  Teacher
Oct
31
answered An example for a calculation where imaginary numbers are used but don't occur in the question or the solution.
Oct
10
comment Logic nonsense/paradox
As I understood, B &| T interpreted their own results as a challenge to the axiom of choice, as an example how the mathematics has been diverged from reality. However, their contemporaries were delighted from the possibilities of the new mathematics. This has similarity to the acceptance of Alan Sokal hoax. I don't follow the claim "all sentences are false." If Arthur is a cat and I say 'Arthur is a cat', how is the sentence false? P.S. wait 15 minutes and check Wikipedia :)
Oct
10
answered Logic nonsense/paradox