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 May18 comment How to express the traditional variogram for a non 2nd order stationary random function? @Shai: Can you figure out from that expression why the difference between expected values at both points should be added? May17 comment How to express the traditional variogram for a non 2nd order stationary random function? hmm..i'll see..thanks Shai Covo! May17 asked How to express the traditional variogram for a non 2nd order stationary random function? Apr4 comment Given the pdf of independent RVs $I$ and $R$, how to find cdf of $W =I^2R$? @Shai: Can you post the complete solution? Thanks! Apr4 comment Given the pdf of independent RVs $I$ and $R$, how to find cdf of $W =I^2R$? @Shai: How would you back transform once you have pdf or cdf of log(W)? Apr4 comment Given the pdf of independent RVs $I$ and $R$, how to find cdf of $W =I^2R$? @wnoise: Can you edit your equations to look clear. It doesn't looks readable to me. Thanks! Apr4 asked Given the pdf of independent RVs $I$ and $R$, how to find cdf of $W =I^2R$? Apr1 awarded Commentator Apr1 comment solving quadratic equations by completing the square @Myself: hehe...I haven't learned latex!! Apr1 answered solving quadratic equations by completing the square Mar31 awarded Editor Mar24 accepted Proof of upper-tail inequality for standard normal distribution Mar24 comment Proof of upper-tail inequality for standard normal distribution Also, the integral in first step is definition of CDF, but LHS i.e. P(X>x) is not CDF. How is that? Mar24 comment Proof of upper-tail inequality for standard normal distribution can you explain 2nd last step, when multiplying by (t/x)...how we get <= sign there? Mar24 asked Proof of upper-tail inequality for standard normal distribution Nov10 awarded Supporter Nov10 accepted Black Scholes PDE and its many solutions Nov9 asked Black Scholes PDE and its many solutions Sep25 comment How is this series in denominator converted to a series in numerator? @Moron: Thanks for editing. Pardon me for being new! Sep25 awarded Student