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Nick Peterson

San Mateo, CA

http://nrpeterson.info

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Top Questions
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102
What does "isomorphic" mean in linear algebra?
math.stackexchange.com

92
Integration with respect to counting measure.
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65
Drunk man with a set of keys.
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58
Fourier Transform of Derivative
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57
Integral Inequality Absolute Value: $\left| \int_{a}^{b} f(x) g(x) \ dx \right| \leq \int_{a}^{b} |f(x)|\cdot |g(x)| \ dx$
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50
Probability that a quadratic equation has real roots
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44
Why does L'Hopital's rule fail in calculating $\lim_{x \to \infty} \frac{x}{x+\sin(x)}$?
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41
What does expected value of sum of two discrete random variables mean?
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31
What is the standard notation to represent the set of primes?
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21
For $f$ continuous, show $\lim_{n\to\infty} n\int_0^1 f(x)x^n\,dx = f(1).$
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21
Prove that in a tree with maximum degree $k$, there are at least $k$ leaves
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20
Two Circles Can Have At Most One Common Chord? (IMO)
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19
Showing that $U(2^n)$ is not cyclic for $n \ge 3$
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16
Injection $\mathbb N \times \mathbb N \times \mathbb N \to \mathbb N$
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15
But what is a continuous function?
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15
Infinite Cartesian product of countable sets is uncountable
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15
Expected value of rolling dice until getting a $3$
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15
Grandi's series contradiction
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13
What is the intuition behind the formula for the average?
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13
What open-source books (or other materials) provide a relatively thorough overview of data science?
datascience.stackexchange.com

13
pigeonhole principle clarification
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13
Puzzled by $\lim\limits_{x \to - \infty} \sqrt{x^2+x}-x$
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12
Integral of a function's derivative does not equal the original function?
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12
Prove that $2^n3^{2n}-1$ is always divisible by 17
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12
How to prove $\sum_{n=0}^{\infty} \frac{n^2}{2^n} = 6$?
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12
Motivation for Jordan Canonical Form
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11
Does there exist a function which equals $0$ for odd inputs and $1$ for even inputs?
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11
Why is $\sqrt{x^2} = |x|$?
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11
Logarithm of Gaussian function is whether convex or nonconvex?
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11
Notation used for integrals w.r.t. probability measures
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