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visits member for 1 year, 11 months
seen Nov 26 '13 at 14:32

Jul
2
awarded  Curious
Mar
28
awarded  Popular Question
Jan
6
awarded  Notable Question
Nov
7
awarded  Popular Question
Sep
28
awarded  Yearling
Aug
11
awarded  Popular Question
Apr
8
comment Combinatorial explanation to following recurrence relation $a_n = 2 a_{n-1} + a_{n-2}$
@xen I did not say azimut's proof is not combinatorial. I just wanted to say it may not be what Xentius looking for according to his previous questions. But of course only one to confirm this is Xentius.
Apr
8
comment Combinatorial explanation to following recurrence relation $a_n = 2 a_{n-1} + a_{n-2}$
I guess what @Xentius meant by a combinatorial proof is not this. He seems to be looking for an answer like in this question he asked: math.stackexchange.com/questions/340905/…
Mar
19
comment Binomial formula for $(x+1)^{1/3}$ (related to Newton's binomial theorem)
@Xentius it's called gamma function.
Feb
19
revised How many zeros are there at $1000!$ in the base $24$
fixed two problematics
Feb
19
suggested suggested edit on How many zeros are there at $1000!$ in the base $24$
Dec
16
comment Proof about diameter of a set
I guess this should be enough for a) Choose $x_n ∈ A_n$ , and show that the sequence $(x_n)$ satisfies the Cauchy condition.
Dec
16
comment For which x values, this series is convergent?
@DonAntonio Thank you so much. It is a pleasure for me to be a member of the club. = )
Dec
16
awarded  Teacher
Dec
16
revised For which x values, this series is convergent?
deleted 10 characters in body
Dec
16
comment For which x values, this series is convergent?
@DonAntonio Ops! you are both right. I edited my answer.
Dec
16
answered For which x values, this series is convergent?
Dec
5
comment Limit proof of $a^n$ where |a|<1
yeah it is so simple. how could not I think that! :/ I guess I need to take a rest. thank you for your answer.
Dec
5
accepted Limit proof of $a^n$ where |a|<1
Dec
5
revised Limit proof of $a^n$ where |a|<1
added 3 characters in body