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May
10
comment functional equation involving $ f(x/k) $
what does 'mathematica softwary' say ??
May
10
accepted functional equation involving $ f(x/k) $
May
10
asked functional equation involving $ f(x/k) $
May
6
answered Finding the derivative with functions inside, such as $g(x) = \dfrac{3x-1}{f(x)}$
May
2
comment Differential Equation $y'=4|y|^{3/4}, y(0)=0$
takning integration with respect to x , since $ y=y(x) $ then we have the implicit relation $ 4x+C=|y|^{1/4} $ applying the condition $ y(0)=0 $ we get 4.0+C= |y(0)|^{1/4}=0 $ so $ C=0 $
May
1
asked entire functions approximation by orthogonal polynomials $P_{2n}(z) $
May
1
comment Discontinuity and riemann integrability
the fractional part function is periodic with period one so $ {ax} $ is periodic $ 1/a$ for each 'a'. discontinuities are $ 1/n $ for n=1,2,3,4,5....
May
1
asked Hadamard finite part in 2 dimensions
Apr
17
accepted Residue theorem for a rational integral
Apr
16
asked Residue theorem for a rational integral
Apr
15
comment A cohomological statement equivalent to the Riemann Hypothesis
what differntial operator is he using ?? :) i mean you need a self adjoint operator to get the Riemann zeros as eigenvalues
Apr
12
comment Inverse Laplace Transform of zero
for any constant $ L^{-1}{C}= C\delta (x) $ if $ c=0 $ we have $0 \delta (t) =0 $ except for the case $ t=0 $
Apr
9
asked Why does the Euler-Maclaurin summation formula not exist in $2$ or more dimensions?
Apr
4
answered Asymptotic expansion for $\frac{1}{2\zeta(3)}\int_x^\infty \frac{u^2}{e^u - 1} du$?
Apr
4
comment Name of $a*b=c$ and $b*a=-c$
isn't this a dot product algebra .. vectorial or dot product :)
Apr
4
accepted evaluation of this integral with a fractional part
Apr
4
asked evaluation of this integral with a fractional part
Mar
29
comment Spectrum of the Hill Operator $L(y)= -y''+ v(x) y $
it is semiclassical WKB method :) to recover the potential
Mar
29
answered Spectrum of the Hill Operator $L(y)= -y''+ v(x) y $
Mar
18
asked Mellin transform of digamma function