991 reputation
720
bio website stackexchange.com/users/…
location France
age 27
visits member for 4 years, 4 months
seen Nov 6 at 16:55

That is not dead which can eternal lie.

And with strange aeons even death may die.


Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Sep
4
comment Find a closed form for this sequence: $a_{n+1} = a_n + a_n^{-1}$
I guess positivity of $\varphi$ is one sufficient condition to get the correct behavior. Only a guess though.
Aug
4
awarded  Yearling
Mar
12
comment Is $0$ a natural number?
This question is not related to math, it is the consequence of an ambiguous notation which was used by Dedekind in 1888. To avoid ambiguity, ℕ* is used to exclude 0. I cannot manage to understand how this question is still not closed.
Mar
12
comment Simple combinatorics question - caught off guard!
I see your point, yet I believe it is a shame to have ambiguous statements in math.
Mar
12
comment Simple combinatorics question - caught off guard!
With Wiki, "there is no universal agreement about whether to include zero in the set of natural numbers: some define the natural numbers to be the positive integers {1, 2, 3, ...}, while for others the term designates the non-negative integers {0, 1, 2, 3, ...}. The former definition is the traditional one, with the latter definition having first appeared in the 19th century." In the context, this is ambiguous since "For natural numbers (taken to include 0) n and k", the binomial coef is defined
Mar
12
comment Simple combinatorics question - caught off guard!
Not in my country. In France, we call ℕ* the set excluding 0.
Mar
12
comment Simple combinatorics question - caught off guard!
This is wrong for n=0.
Mar
12
comment Simple combinatorics question - caught off guard!
This is clear and intuitive. However, one would have to take care of the case for which a pair contains twice the same "menu" (n=0), and for which the statement is wrong.
Jan
26
comment Funny identities
This one is amazing.
Oct
23
comment Why does the google calculator give tan 90 degrees = 1.6331779e+16?
Thi is the result of dividing by a "zero" double.
Aug
4
awarded  Yearling
May
7
awarded  Caucus
Apr
30
comment Uniform distribution on a simplex via i.i.d. random variables
Related.
Jan
25
awarded  Popular Question
Nov
24
awarded  Nice Answer
Nov
23
revised Taking the limit under the integral sign. Help!
Clearer title
Nov
23
suggested approved edit on Taking the limit under the integral sign. Help!
Nov
19
revised Math every mathematician should know
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