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Aug
24
comment Proof that Pi is constant (the same for all circles), without using limits
@Niel de Beaudrap: I would say that it is part of the “intuitive” understanding of the notion of similarity. This can be explained by noting that mathematical facts are independent of the choice of unit length. But I am no expert of mathematical education, and I am not too sure what is intuitive and what is not.
Aug
24
revised Proof that Pi is constant (the same for all circles), without using limits
added 210 characters in body
Aug
24
answered Proof that Pi is constant (the same for all circles), without using limits
Aug
14
awarded  Supporter
Aug
13
awarded  Teacher
Aug
13
revised a provable upper bound on the summation
fixed typo, added some comment
Aug
13
awarded  Editor
Aug
13
revised a provable upper bound on the summation
better formatting
Aug
13
answered a provable upper bound on the summation