183 reputation
10
bio website topjaklont.org
location Toronto, Canada
age
visits member for 2 years, 6 months
seen 2 days ago

I'm a Post-Doctoral Fellow in atmospheric remote sensing at the University of Toronto in Toronto, Ontario, Canada. I first came to Stack Exchange for practical reasons: Tex.SE has been of major help when I wrote my licentiate (midterm) thesis. Since then, I have discovered the joy of many websites. As my network profile will show, I'm interested in travel, outdoor, scientific skepticism, and as I work in academia, also in academia and LaTeX.


Sep
24
awarded  Autobiographer
Sep
24
comment Can a number have infinitely many digits before the decimal point?
Is it not possible to have a sequence with an infinite number of elements, but where the beginning and ending are known? And then define a number as all the numbers in this sequence concatenated in some prescribed base...
Sep
24
comment Can a number have infinitely many digits before the decimal point?
you don't, because the information relies in the "first" digit. Of course nobody know what the first digit is, since there is no first digit.. What if I have $123......321.123$ and $234......432.234$? The second number is larger...?
Jul
27
comment Is every factorial divisible by its sum of digits?
How about $0$ ?
May
17
comment Should I understand a theorem's proof before using the theorem?
You can easily lose weeks of time reading books and papers... Actually, you could lose years.
Apr
14
awarded  Critic
Mar
3
comment A family has three children. What is the probability that at least one of them is a boy?
@DavidRicherby I concede that my claim was too strong (my source was my high-school biology teacher, who had a medical explanation that sounded solid to me). I claimed that "A mother who has given birth to 2 boys is statistically more likely...". Correct would have been to replace is by might be, so that for the question to be complete, the assumption should be made that the chances are fully independent. To investigate whether there is any peer-reviewed evidence for my original claim is beyond the scope of this question (and, for that matter, this site).
Mar
3
comment A family has three children. What is the probability that at least one of them is a boy?
@DavidRicherby No independent effect. But P(sex of 3rd child|first 2 children are male) is not necessarily an independent "experiment". In other words, perhaps a family of all males is indicative of a different, known cause that the experimenters in the cited study have controlled for, whereas this question has not.
Mar
3
comment A family has three children. What is the probability that at least one of them is a boy?
A mother who has given birth to 2 boys is statistically more likely to give birth to another boy, than to a girl. It seems the answers all seem to assume that P(B)=P(G)=½. This assumption is only approximately correct.
Feb
5
comment Is it faster to count to the infinite going one by one or two by two?
I remember this puzzle from my mathematics teacher in high school, and loved it ever since.
Feb
5
comment Is it faster to count to the infinite going one by one or two by two?
@TobiasKildetoft Why is that (suddenly) a problem?
Jan
14
comment Splitting a sandwich and not feeling deceived
Sounds like C loses if A cuts poorly.
Jan
14
comment Splitting a sandwich and not feeling deceived
We had a similar problem like this at work once with pizza and we basically decided not to eat shared pizza anymore. — You must not be mathematicians at work.
Dec
11
awarded  Commentator
Oct
28
comment Chance of marrying a girl
Sounds like an (unusual!) homework question?
Jul
9
comment Phrase and symbol for “geometric absolute value”$ e^{|\ln(x)|}?$
@frogeyedpeas Right. I didn't think of that because in my practical application, I already know that $x > 0$. The issue becomes more involved if $x$ can be negative, because what is the fractional error if $a/b$ is negative?
Jul
9
revised Phrase and symbol for “geometric absolute value”$ e^{|\ln(x)|}?$
added 42 characters in body
Jul
9
awarded  Custodian
Jul
9
awarded  Student
Jul
9
revised Phrase and symbol for “geometric absolute value”$ e^{|\ln(x)|}?$
edited title