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Mar
24
revised Is there a special name for pi-based finite difference?
added 6 characters in body
Mar
24
revised Is there a special name for pi-based finite difference?
edited body
Mar
24
revised Is there a special name for pi-based finite difference?
added 45 characters in body
Mar
24
asked Is there a special name for pi-based finite difference?
Mar
24
comment How to define the $0^0$?
The second premise is wrong.
Mar
20
asked What happens if to postulate that complex numbers whose argument differs by $2 \pi$ are not equal?
Mar
17
comment What is the arithmetic mean of all positive integers less than $1$?
@robjohn no. wrong.
Mar
17
comment What is the arithmetic mean of all positive integers less than $1$?
@robjohn what the question is what the answer. If the question has any meaning at all, the answer is 1/2.
Mar
16
revised Is it wrong to tell children that 1/0 = NaN is incorrect, and should be ∞?
added 18 characters in body
Mar
16
answered What is the arithmetic mean of all positive integers less than $1$?
Mar
16
awarded  Organizer
Mar
16
revised Is it wrong to tell children that 1/0 = NaN is incorrect, and should be ∞?
edited tags
Mar
16
answered Is it wrong to tell children that 1/0 = NaN is incorrect, and should be ∞?
Mar
5
asked If the operator is linear but diverges on the basis vectors, how to find its matrix?
Mar
5
comment What is series coefficient for $f(x)=\csc^2 x - \frac1{x^2}$?
it seemed to me that your answer was not finished because it ended with a comma.
Mar
5
asked Is there a name for the class of functions which are infinitely integrable in elementary functions?
Mar
5
answered What is series coefficient for $f(x)=\csc^2 x - \frac1{x^2}$?
Mar
5
comment What is series coefficient for $f(x)=\csc^2 x - \frac1{x^2}$?
I already found the answer to this question: math.stackexchange.com/questions/699611/…
Mar
5
comment Why this function is elementary and its pair is not?
@vonbrand the first one is $\csc^2 x - \frac1{x^2}$, the second one can only be explained using polygamma or Hurwitz zeta.
Mar
5
comment Zero to the zero power - Is $0^0=1$?
One does not exclude the other, this can be both indeterminate form when considering limits, AND defined.