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
1
accepted 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?
Jun
26
accepted Showing path connected matrices of a group $G$ is a normal subgroup
Jun
19
accepted Understanding equivalent definitions of left cosets
Jun
18
accepted Open sets in $\Bbb{R}^2$ and $\Bbb{R}^3$
Jun
17
accepted Clarification on quotient groups
Jun
17
accepted Congruence relation possible typo?
Jun
10
accepted Clarification needed on finding last two digits of $9^{9^9}$
Jun
10
accepted Showing a compact metric space has a countable dense subset
Jun
10
accepted Can a group of order $55$ have exactly $20$ elements of order $11$? (Clarification)
Jun
8
accepted Determining whether or not a group has an element of a specific order
Jun
8
accepted What can we say about the order of a group given the order of two elements?
Jun
2
accepted Find all positive integers $x$ such that $13 \mid (x^2 + 1)$
Jun
2
accepted Showing existence of an element with order $p$
May
27
accepted Proving $\sum_{m=0}^M \binom{m+k}{k} = \binom{k+M+1}{k+1}$
May
26
accepted Finding the values of $z$ s.t. $\sum_{n=0}^{\infty} \left( \frac{z}{1+z} \right)^n$ is convergent
May
19
accepted Definition of open set/metric space
May
15
accepted Finding asymptotes to general functions
May
14
accepted Infinitely many primes of the form $4n+3$
May
12
accepted Using $\gcd(a,b)$ to find gcd of other values $\gcd(a^2,b)$ and $\gcd(a^3,b)$