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31857
bio website hjg.com.ar
location Buenos Aires, Argentina
age 47
visits member for 4 years, 1 month
seen 9 hours ago

15h
revised $\sum \tan ( 1/n)$ diverges
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17h
comment Determining the Cramer-Rao lower bound
The key is that your density can be seen as parametrized by $\sigma$ or by $\sigma^2$. If this confuses you, make the replacement $\sigma^2= s$
17h
comment Determining the Cramer-Rao lower bound
"taking the partials of $\log f(x;\sigma^2)$; this procedure gives $I(\sigma^2)$, right?" It depends: partial with respect to what? Perhaps you should post your derivation.
1d
comment Is Infinity Needed in Maths? Does Infinity Actually Exist?
"Infinity does in fact exist in Maths and in Reality" Does number three exist in Maths and in Reality? What on earth would that mean?
1d
answered Coupon Collector Prob Variation
2d
revised Coupon Collector Prob Variation
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2d
answered Self-information, one event half as likely than another event conveys twice the amount of information?
Aug
22
comment Cardinality of the set of all two-element subsets of $\mathbb{N}$
Each connection can be put in correspondence with a (positive) fractional number (if the connections are not directed, then restrict to the fractions that have the numerator greater than denominator). It's well known that the rationals are countable.
Aug
21
comment A simple formula for pseudo-random binary string
Perhaps you should separate the conceptual/mathematical problem from the (Python) implementation. Anyway, the first thing that comes to mind is to implement a pseudorandom generator using a Linear congruential generator
Aug
20
comment Combinatory, expected number of connected nodes. Sum on positive multinominal coefficients
"NUmber of edges is a variable". A random variable (included in the expectation calculation), or rather a parameter (the expectation is a function of it)? Your example suggest the later.
Aug
20
answered Combinatory, expected number of connected nodes. Sum on positive multinominal coefficients
Aug
19
comment Combinatory, expected number of connected nodes. Sum on positive multinominal coefficients
Not clear for me. "Each each is unique" (?) "one node from A can be connected to any number of nodes from B" (and viceversa, no?) "Connected nodes form a boundary of the set" (are you speaking of the set A?). Is the total number of edges fixed? "Expected number"... with respect of what probability law?
Aug
19
revised Erasure Codes with Simplex Locality
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Aug
19
comment Placing a circle in a square lattice
@durron597 The area that remains from the square, one the circle is removed.
Aug
19
comment Placing a circle in a square lattice
$p(r)$ is the probability that is does not touch any point.
Aug
19
answered Placing a circle in a square lattice
Aug
19
answered Erasure Codes with Simplex Locality
Aug
19
revised Erasure Codes with Simplex Locality
added relevant text from the paper, to make the question self contained
Aug
18
answered Getting marginal distribution from joint distribution
Aug
18
revised 3 points on “horizontal” sinusoid, what is its period?
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