FelixCQ
Reputation
823
Top tag
Next privilege 1,000 Rep.
Create tags
 Jun30 awarded Yearling Jun30 awarded Yearling Jun30 awarded Yearling Apr11 awarded Scholar Apr11 accepted Combinatorial interpretation of Delannoy numbers formula Apr9 awarded Student Apr9 asked Combinatorial interpretation of Delannoy numbers formula Feb8 answered PDE diffusion problem Feb7 comment Can the natural numbers be uncountable? Well, at least your proof is correct to show that $p$-adic integers are uncountable. Nov21 awarded Enthusiast Nov21 awarded Nice Answer Nov17 answered Mathematical formula to generate a curved Chinese-style roof Nov16 answered Prove if $a>0, b>0$, $P(X\cdot Y\le b)\ge P(X\le b/a)-P(Y>a)$, where $X,Y$ random variables? Nov15 revised Rigorous proof of a simple fact dealing with event space in probability theory added details on induction Nov15 answered Rigorous proof of a simple fact dealing with event space in probability theory Nov11 answered Probability about three independent exponential random variables Nov9 awarded Commentator Nov9 comment Getting exactly $n$ points from coin tossing You can even generalize directly for a biased coin, and get, where $p$ is the probability of obtaining tail (of scoring two points), $P_n=\frac{1}{1+p}\left(1-(-p)^{n+1}\right)$. Oct31 revised If $V_1=\ker(P)$, $V_2=\ker(I-P)$ and $V=V_1 \oplus V_2$ then prove $P^2=P$? added complete answer Oct31 comment If $V_1=\ker(P)$, $V_2=\ker(I-P)$ and $V=V_1 \oplus V_2$ then prove $P^2=P$? @Gerry: Judging from the votes -- and the comments from the OP -- it seems you were right! I will try to be less elliptical in the future.