9,961 reputation
22148
bio website gottwurfelt.wordpress.com
location Atlanta, GA
age 31
visits member for 4 years, 5 months
seen 54 mins ago

Data scientist and math blogger.


Nov
17
comment Characteristics of odd parts in a partion
Guessing this is a homework question, so I'll give a hint. Have you seen a proof that the number of partitions with only odd parts is the same as the number of distinct parts, using generating functions? You can adapt that proof to this problem.
Nov
15
reviewed Close Combinatorial card game
Nov
13
answered Number of ways to select non-adjacent squares from a rectangular grid?
Nov
13
reviewed Approve pell-type-equations tag wiki excerpt
Nov
10
awarded  Nice Answer
Nov
9
answered Product of differences of permutation in circle
Nov
9
answered Easy Question about Computing the probability of properties of random subsets
Nov
7
answered What is the average of rolling two dice and only taking the value of the higher dice roll?
Nov
1
comment How do calculators evaluate inverse trig functions?
I do like it. The question to me seems to be whether one wants the more conceptual (yours) or calculational approach; yesterday calculation felt worthwhile to me, but in the light of morning I can see how the more conceptual approach is superior.
Oct
31
comment How do calculators evaluate inverse trig functions?
God plays dice is my blog. The commenter "logosintegralis" there took a stab at using Pade approximants to derive that approximation.
Oct
29
comment Expected number of turns for a rook to move to top right-most corner?
The fact that the move is to move to a random square in the same column or row - i. e. change one coordinate uniformly at random - explains why G7 is no closer to H8 than A1 is.
Oct
29
answered Calculate limit $\lim_{n\rightarrow\infty}\dfrac{(4n-100)^{4n-100}n^n}{(3n)^{3n}(2n)^{2n}}?$
Oct
29
comment Calculate limit $\lim_{n\rightarrow\infty}\dfrac{(4n-100)^{4n-100}n^n}{(3n)^{3n}(2n)^{2n}}?$
You're right. That'll teach me to do tricky limits in my head.
Oct
29
comment Are there other accumulation functions that holds $a(n-t)={a(n) \over a(t)}$?
Yes, if you assume that the function $a$ is continuous.
Oct
28
awarded  Custodian
Oct
28
reviewed Close Discrete math proof by contrapositive?
Oct
28
reviewed Leave Open Difference between power series method and Frobenius method
Oct
28
reviewed No Action Needed Matlab integral with parameter
Oct
28
reviewed Edit Difference between power series method and Frobenius method
Oct
28
revised Difference between power series method and Frobenius method
minor grammar changes