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age 26
visits member for 4 years
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Sep
13
awarded  Yearling
Sep
10
reviewed Approve suggested edit on Prove by induction: $1(1!)+\cdots + n\cdot n!$ = (n+1)! - 1
Sep
8
asked A regulated function is the limit of a normally convergent series of step functions.
Aug
29
reviewed Approve suggested edit on Infimum and supremum of the empty set
Jul
26
reviewed Reject suggested edit on About p-adic numbers
Jul
25
awarded  Custodian
Jul
25
reviewed Approve suggested edit on Finding the zeros of trionometric polynomails.
Jul
25
reviewed Approve suggested edit on Derivative of $\sqrt{x^2+1}$
Jul
25
reviewed Approve suggested edit on What is the reason for the one-half in the normal pdf's gaussian (i.e. : why $\exp(-x^{2}/2)$ instead of $\exp(-x^{2})$ )
Jul
11
awarded  Good Question
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
18
comment Connectivity of $\mathbb R$
The first $\cap$ should be $\cup$. You'll have to add your definition of connectedness.
Jun
13
awarded  Popular Question
May
15
awarded  Nice Question
Feb
24
answered Why is there antagonism towards extended real numbers?
Feb
15
comment What's the intuition behind Pythagoras' theorem?
"If at all possible, find a better teacher" - You shouldn't reinforce the OP's disrespect of his/her teacher based on a single quote you didn't hear directly.
Feb
6
awarded  Notable Question
Dec
29
comment Evaluating $\lim_{n\to \infty } \, \left(\sum _{k=1}^{\infty } \frac{1}{n}\right)$
A calculus example of such a use of $\infty$ is the pretty common (and easy to memorize) definition of $\limsup_{n\rightarrow\infty}x_n$ as $\lim_{n\rightarrow\infty}\sup_{k\geq n}x_k$.
Oct
17
awarded  Nice Answer