1,161 reputation
729
bio website math.stackexchange.com/users/…
location Antarctica
age 79
visits member for 2 years, 3 months
seen Dec 23 '14 at 8:11

Self-learning mathematics. Many thanks to those who make time to help others on the site.


Mar
24
revised Finding coefficient of generating function
added 88 characters in body
Mar
24
accepted Finding coefficient of generating function
Mar
24
answered Generating function with dependencies
Mar
24
awarded  Excavator
Mar
24
revised Generating function with dependencies
reorganized
Mar
24
suggested approved edit on Generating function with dependencies
Mar
24
answered How many solutions possible for the equation ${2x}+{3y}+{7z}={r}$
Mar
24
answered finding the coefficient of $x^{14}$ in the expression: $\frac{5x^2-x^4}{(1-x)^3}$
Mar
24
comment Question about generating functions
WHOA! How do you do the mouse-over effect?!
Mar
24
answered generating functions / combinatorics
Mar
24
answered HW Probability Problem
Mar
24
comment how to prove $\sum _{|k|\lt\sqrt m}\binom{2m}{m+k}\ge2^{2m-1}$
how did you go from the second line to the third line?
Mar
24
answered Last combinatorics question
Mar
23
revised Why does Möbius transformation $f(z)$ map the unit disk $|z|<1$ to itself?
formatted latex
Mar
23
comment Why does Möbius transformation $f(z)$ map the unit disk $|z|<1$ to itself?
Please see if the edit was what you intended for.
Mar
23
suggested approved edit on Why does Möbius transformation $f(z)$ map the unit disk $|z|<1$ to itself?
Mar
23
revised I can't figure out this combinatorics problem… Or at least why my solution doesn't work.
added 2 characters in body
Mar
23
accepted Determining Stirling number
Mar
23
asked Recurrence relation for the number of $n$-digit ternary sequences with no consecutive $1$s or $2$s
Mar
22
comment Recurrence relation for the number of ternary trings containing 2 consecutive zeros vs not containing
If you don't mind, could you clarify or, rather, elaborate on your explanation after the equalities?