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Reference request: introductory level book for Riemann surfaces

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Randomly permute $\{1,\cdots,100\}$. What is the probability that none of the $S_k$'s defined by $\sigma(1)+\cdots+\sigma(k)$ is divisible by $3$?

probability proof-verification stochastic-processes permutations contest-math asked Oct 12 '18 at 11:31

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Looking for a way to create a particular matrix in python in a less amount of time

Solving the matrix equation $X^tA+A^tX=0$ for $X$ in terms of $A$

What is the equivalent way of doing this type of pythonic vectorized assignment in MATLAB?

Does localization in commutative algebra really “localize” our study of a variety?

How many triangles are there in the 'picture' of $K_5$? Different ways to count it

If two rotation matrices commute, do their infinitesimal generators commute too?

Reference request: introductory level book for Riemann surfaces

Randomly permute $\{1,\cdots,100\}$. What is the probability that none of the $S_k$'s defined by $\sigma(1)+\cdots+\sigma(k)$ is divisible by $3$?