# Harold

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210
bio website location age member for 1 year, 9 months seen May 24 at 11:52 profile views 219

 20 Why is $\frac{1}{\frac{1}{X}}=X$? 9 Proof that one large number is larger than another large number 6 Does a function that has an exponential analog to $log(xy) = log(x) + log(y)$ exist? 6 Coprime numbers - number theory 5 Intervals that are free of primes

# 1,248 Reputation

 +110 Why is $\frac{1}{\frac{1}{X}}=X$? +10 Simplify $\sum_{i=0}^n (i+1)\binom ni$ +20 Does a function that has an exponential analog to $log(xy) = log(x) + log(y)$ exist? +10 $1 + \frac{1}{1+2}+ \frac{1}{1+2+3}+ … + \frac{1}{1+2+3+…+n} = ?$

# 2 Questions

 1 Find the transform 1 Mean matching size

# 55 Tags

 22 elementary-number-theory × 5 16 calculus × 7 21 arithmetic × 2 6 special-functions 20 fractions 5 probability × 7 20 intuition 5 probability-distributions × 3 20 inverse 5 permutations × 2

# 15 Accounts

 Mathematics 1,248 rep 210 Stack Overflow 314 rep 129 Computer Science 108 rep 4 Super User 101 rep Meta Stack Exchange 101 rep