Fan Zhang
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544
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### Questions (39)

 16 Distribution of a maximum 14 Approximating the logarithm of the binomial coefficient 11 What is the distribution of gaps? 10 Strategy for a game of breaking sticks 10 Problem about partial sum of exponential random variable

### Reputation (544)

 +5 How calculate the probability density function of $Z = X_1/X_2$ +5 How to derive the bound formula of hypergeometric distribution? +25 Approximating the logarithm of the binomial coefficient +5 Proof of $\sum_{0 \le k \le t} {t-k \choose r}{k \choose s}={t+1 \choose r+s+1}$?

 3 Proof of $\sum_{0 \le k \le t} {t-k \choose r}{k \choose s}={t+1 \choose r+s+1}$? 2 Why $\sqrt{-1 \times -1} \neq \sqrt{-1}^2$? 2 Restricted Compositions

### Tags (28)

 5 combinatorics × 16 2 fake-proofs 3 binomial-coefficients × 5 0 probability × 24 3 summation × 2 0 approximation × 3 2 complex-numbers 0 stirling-numbers × 2 2 algebra-precalculus 0 inequality × 2

### Accounts (6)

 Mathematics 544 rep 622 Stack Overflow 269 rep 211 Cross Validated 189 rep 5 TeX - LaTeX 155 rep 114 MathOverflow 132 rep 8