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 Jul3 comment How to approximate the bounding region of a 2d differentiable mapping locally? Thanks, I used a this package to triangulate the set and apply $f$ on the vertices and then get a Convex Hull of the mapped points. It works ok so far. Apr2 comment Asymmetric random walk with unequal step size other than 1. Still, it is not trivial. I still need to solve high degree polynomials equation for hitting probability. For mean hitting time, it is trivial. Apr2 comment Asymmetric random walk with unequal step size other than 1. the issue is, when $a$ is large, it is not so simple to solve the equations Mar27 comment How to solve this inhomogeneous recurrence difference equation? I updated my question as I am only interested in the positive solutions which are not infinity. So far I can only find one for the example case Mar27 comment How to solve this inhomogeneous recurrence difference equation? @vonbrand I updated my question as I am only interested in the positive solutions which are not infinity. So far I can only find one for the example case. Mar27 comment How to solve this inhomogeneous recurrence difference equation? @GlenO No, my question is correct. Mar15 comment Is there a known distribution for this permutation with replacement problem? @MatemáticosChibchas see update Feb22 comment Can we say that 2 random variables $(X, Y)$ are independent if $P(X \mid Y=y)$ is a function without $y$ @Sasha Hopefully I made it clearer after edit. Oct19 comment what's the generalized approach to this infinite state markov chain problem @ThomasAndrews sry there was an typo in the question, the additional draws is 8 Oct19 comment what's the generalized approach to this infinite state markov chain problem @ThomasAndrews yes it does Oct19 comment How to tackle markov chains with transition cost? perfect. btw i don't get what it is following the computation link to wolfram Jun15 comment A small pick win game with extra picks and multipliers without replacement @Damieh Multiplier always apply to the final total. Btw, do u know how to make comments friendly for dollar sign? Mar2 comment Should I ignore $0$ when do inverse transform sampling? @André Nicolas: however, in a program, when Random.next() generates values [0,1), if it happens to output 0... the whole program I build upon the sampling algorithm would crash. Feb14 comment What's the expected value in this jackpot winning experiment. i doubt that it has nothing to do with p, i had thought we have to apply some posterior on that. (Bayesian inference) Is it valid that each trial has equal chance to win a jackpot regardless of how low the prior p is? Aug23 comment A Combinatoric Probability Problem, my program seems to give wrong answer my maths told me it's 28.8% Jul18 comment number of combinations without repetition with limited supply -Dennis ok, generating functions, u reminded me something i learned years ago.