1,151 reputation
729
bio website math.stackexchange.com/users/…
location Antarctica
age 79
visits member for 2 years, 2 months
seen Dec 16 at 5:42

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


Dec
2
revised Give upper and lower bound for $\left|\cos{na} + \frac{\sin{nb}}{n}\right|$
updated post to include more work
Dec
1
asked Give upper and lower bound for $\left|\cos{na} + \frac{\sin{nb}}{n}\right|$
Dec
1
accepted How to find the maximum and minimum of $\dfrac{\sin x}{x^2+1}$?
Nov
25
asked How to find the maximum and minimum of $\dfrac{\sin x}{x^2+1}$?
Nov
11
accepted How to show $a_n = \frac{n+1}{n-1}$ is strictly decreasing by induction?
Nov
11
asked How to show $a_n = \frac{n+1}{n-1}$ is strictly decreasing by induction?
Oct
15
comment Clarification for proof of $\mathbb{Q}$ being dense in $\mathbb{R}$ (Rudin's PMA)
@ThomasAndrews And if it is the $nx$ obtained from $n(y-x)>1$, how does one know to focus on $nx$ and not $ny$?
Oct
14
comment Clarification for proof of $\mathbb{Q}$ being dense in $\mathbb{R}$ (Rudin's PMA)
@ThomasAndrews When you first mention $nx$, are you referring to the $nx$ obtained from $n(y-x)>1$?
Oct
14
comment Baby Rudin Theorem 1.20 (b) Proof
@BrianM.Scott Why doesn't the set begin with "-m_2"?
Oct
7
awarded  Popular Question
Oct
6
awarded  Yearling
Sep
30
awarded  Explainer
Aug
30
awarded  Popular Question
Aug
25
awarded  Popular Question
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
May
25
awarded  Popular Question
Mar
9
awarded  Popular Question
Feb
6
awarded  Nice Question
Nov
25
awarded  Popular Question