Michael Lugo

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21131
bio website gottwurfelt.wordpress.com
location San Francisco, CA
age 29
visits member for 2 years, 10 months
seen May 16 at 11:48
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Quantitative analyst and math blogger.


148 Answers

newest activity votes
49
What do $\pi$ and $e$ stand for in the normal distribution formula?
23
Can you answer my son's fourth-grade homework question: Which numbers are prime, have digits adding to ten and have a three in the tens place?
22
Math story: Ten marriage candidates and 'greatest of all time'
22
Is there a real number lookup algorithm or service?
22
Find the average of $\sin^{100} (x)$ in 5 minutes?
20
Proving that 1- and 2-d simple symmetric random walks return to the origin with probability 1
18
Probability of 3 people in a room of 30 having the same birthday
16
Good Physical Demonstrations of Abstract Mathematics
16
How are we able to calculate specific numbers in the Fibonacci Sequence?
14
Factoring $a^{10}+a^5+1$
13
Chance of meeting in a bar
12
Probability that a vector in $\mathbb{Z}^n$ is primitive
12
Why is $1^{\infty}$ considered to be an indeterminate form
11
A (probably trivial) Induction Problem: $\sum_2^nk^{-2}\lt1$
11
Visualising functions from complex numbers to complex numbers
10
Finding $\lim\limits_{n \to \infty}{\frac{1^1+2^2+3^3+\cdots+n^n}{n^n}}$
10
Why do the $n \times n$ non-singular matrices form an “open” set?
10
Is there an n such that $2^n|n!$?
10
Is it possible to get arbitrarily near any acute angle with Pythagorean triangles?
9
Proving : $ \bigl(1+\frac{1}{n+1}\bigr)^{n+1} \gt (1+\frac{1}{n})^{n} $
9
Improper integral
8
$C(n,p)$: even or odd?
8
$m!n! < (m+n)!$ Proof?
8
Evaluating the integral $\displaystyle\int_1^2 \int_x^{2x} \sqrt{\dfrac xy} e^{\tfrac yx}\; dy\; dx$
8
Uniform distribution on a simplex via i.i.d. random variables
8
Precedence of set union, intersect, and difference?
7
Sum the infinite series $ \sum_{n=0}^\infty (2n^7 + n^6 + n^5 + 2n^2)/n! $
7
Have I calculated the sum $\sum\limits_{k=1}^\infty\frac{q\lambda^k}{k!e^\lambda}$ correctly?
7
Can I use my powers for good?
7
Tiling a 3 by 2n rectangle with dominoes
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