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May
20
revised Maths Economics Question
LaTeX
May
20
revised Geometry/ trig.
added 270 characters in body
May
20
answered Geometry/ trig.
May
20
comment Poisson counting process question, but correct answer not obtained by usual method
@DOGOFWALLSTREET because knowing what happened over a large interval influences information you know about its subintervals.
May
20
comment Poisson counting process question, but correct answer not obtained by usual method
$P(A|B) \neq P(B|A)$, even here
May
20
answered Poisson counting process question, but correct answer not obtained by usual method
May
20
comment Way to compare three numbers with an algorithm.
+1. I like accounting for relative distances, which my answer does not do. Unfortunately, won't generalize too well. Perhaps you need to divide this by the average instead of the median... Another question to think about is 0, 10, 10.001 are not close (OP's second example) but your metric would be fairly small...
May
20
comment Way to compare three numbers with an algorithm.
For OP's examples, $\sigma$ would be small in the first one and large in the second one. Whether he wants to account for relative (like in your answer) or absolute (like in my answer) scales, is not clear from the question...
May
20
answered Way to compare three numbers with an algorithm.
May
20
comment What is $\int \frac{e^{a x}}{1+x^2} dx $?
one iteration by parts will convert this to $\int e^{ax} \tan^{-1}(x)dx$ but not sure this is simpler...
May
20
comment Number of roots of a polynomial of non-integer degree
+1, nice, useful - thank you
May
20
comment Division by zero factoring problem
you likely mean $x=-2$ not $x=2$?
May
20
revised Division by zero factoring problem
added 4 characters in body
May
20
answered Division by zero factoring problem
May
20
revised Number of roots of a polynomial of non-integer degree
added 12 characters in body; edited title
May
20
revised Number of roots of a polynomial of non-integer degree
added 12 characters in body; edited title
May
19
answered Is there an easier way to prove this induction?
May
19
comment Convex function inequality for Euclidean norm: $\|(f(x_1),\cdots,f(x_n))\|_2\leq f(\|x\|_2)$
feels similar to Jensen's inequality
May
19
comment Power series as fractions
@user222031 fixed, thanks for the correction
May
19
revised Power series as fractions
added 12 characters in body