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 Jun 22 comment Why isn't the Ito integral just the Riemann-Stieltjes integral? But generally when we take the Ito Integral we usually imagine this extra variable of dependence as fixed right? Jun 22 comment Why isn't the Ito integral just the Riemann-Stieltjes integral? You just mean not differentiable a.e.? Also don't basically all the nice properties of the Riemann Integral which don't work for the Ito integral end up following from CoV in some way or another? I mean it's all the MVT in the end. Jun 22 comment Why isn't the Ito integral just the Riemann-Stieltjes integral? I know you can't apply CoV rule I said that, also if you're devonfangs I'll eat my shoe Jun 22 asked Why isn't the Ito integral just the Riemann-Stieltjes integral? Jun 21 comment Resources for learning mathematics for intelligent people? Seriously though what numbers mean, peano axioms, you're going in the wrong direction. Get her a book on elementary algebra/trig and tell her to do all the problems, intuition and context is built up from the inside out Jun 16 asked Hedging a long position-one period Jun 10 comment How did we know to invent homological algebra? I don't know any homological algebra so maybe this isn't what you're looking for. But I know looking at short exact sequences is sometimes a useful way to look at a normal subgroup of a group and the associated quotient group: $N\rightarrow G\rightarrow G/N$. Jun 9 comment Factor Rings of Polynomial Rings. Could you explain how you know $\varphi$ is a homomorphism? Jun 4 accepted Understanding Conditional Expectation Jun 4 comment Understanding Conditional Expectation Ok cool yah you're right, although I think you mean $E[X_k]=\frac{1}{2}$, since the coin is biased. Jun 4 asked Understanding Conditional Expectation Jun 2 revised Manipulation of probability integrals added 13 characters in body Jun 2 revised Manipulation of probability integrals added 203 characters in body Jun 2 revised Manipulation of probability integrals added 203 characters in body Jun 2 revised Manipulation of probability integrals added 61 characters in body Jun 2 asked Manipulation of probability integrals May 31 revised Showing that $f(x)=x\sin (1/x)$ is not absolutely continuous on $[0,1]$ edited body May 31 revised Showing that $f(x)=x\sin (1/x)$ is not absolutely continuous on $[0,1]$ deleted 4 characters in body May 31 answered Showing that $f(x)=x\sin (1/x)$ is not absolutely continuous on $[0,1]$ May 30 revised Showing that $f(x)=x\sin (1/x)$ is not absolutely continuous on $[0,1]$ added 164 characters in body