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seen Jul 5 '12 at 7:16

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accepted Form of the inner product in $\ l_2$
Mar
31
comment Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
@Alexander Thumm Or i can use the final answer without $\ 2^n $ but just $\ n$ in the denominator.In this way the division of $\ [0,2 {\pi} ]$ is more smooth.
Mar
25
comment Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
Thank you for your time
Mar
25
accepted Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
Mar
25
comment Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
@Alexander Thumm I edited the question because it was not going to solve my problem(see comments under my question).My mistake
Mar
25
revised Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
added 67 characters in body
Mar
25
comment Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
For each x it is a sequence of numbers so the usual topology of R.I ws thinking F_n be everywhere 0 exept an interval of lenght that goes to 0 where say f_n =1.But i need at every x an oscillation between 0 and 1.That's why i need this sequence.
Mar
25
comment Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
I think it can solve a problem of Stein,Fourier analysis(a collegue of mine thought it is a nice problem and gave it me-but i dont know fourier analysis!).So with elementary knowledge i was trying to find a sequence of functions that the integral of their squares tend to 0 but the f_n(x) does not converge at no x.
Mar
25
asked Sequence of subspaces of $\ [ 0,2{\pi} ]$ with length that goes to $\ 0 $
Mar
15
comment The number of symmetric polynomials of n degree
many thanks for your time.
Mar
15
accepted The number of symmetric polynomials of n degree
Mar
14
asked Solutions to Alan Hatcher's “Algebraic Topology”