2,709 reputation
2721
bio website arcsecond.wordpress.com
location Baltimore, MD
age 29
visits member for 3 years, 5 months
seen Apr 7 at 3:13

I'm a physics graduate student.


Apr
14
awarded  Nice Question
Apr
14
comment What are the polar coordinates of the origin?
I don't completely understand your answer. Can you give an example of a function discontinuous at the origin as you were mentioning, please?
Apr
14
comment What are the polar coordinates of the origin?
@Qiochu Thanks. How about derivatives?
Apr
13
asked What are the polar coordinates of the origin?
Apr
1
comment How to show $\arcsin{x} = \frac{\pi}{2} + i \ln{(x+\sqrt{x^2-1})}$?
meaningful titles would also be helpful
Apr
1
revised Find max/minima of $x\sqrt{16-x^{2}}$
added 135 characters in body; added 34 characters in body; deleted 165 characters in body
Apr
1
answered Find max/minima of $x\sqrt{16-x^{2}}$
Mar
28
accepted Is there a geometric interpretation of the exponential function of real numbers?
Mar
25
accepted What are the 2125922464947725402112000 symmetries of a Rubik's Cube?
Mar
25
comment What are the 2125922464947725402112000 symmetries of a Rubik's Cube?
@Joriki Thank you, but doesn't that give the wrong number? The size of the Rubik's cube group is 4*10^19 (en.wikipedia.org/wiki/Rubik's_cube_group).
Mar
25
asked Is there a geometric interpretation of the exponential function of real numbers?
Mar
25
asked What are the 2125922464947725402112000 symmetries of a Rubik's Cube?
Mar
20
revised Logic question: Ant walking a cube
deleted 11 characters in body
Mar
20
answered Logic question: Ant walking a cube
Mar
17
accepted What am I doing when I separate the variables of a differential equation?
Mar
16
awarded  Nice Question
Mar
16
comment What am I doing when I separate the variables of a differential equation?
Thanks for the link, but the description there is not what you said. Differentials as described in Wikipedia are not infinitesimal changes.
Mar
16
comment What am I doing when I separate the variables of a differential equation?
The $dx$ and $dy$ are coming from a single limit. That's what I've been taught in calculus. This answer is logically equivalent to saying "you can do that because you can do that".
Mar
16
asked What am I doing when I separate the variables of a differential equation?
Mar
14
comment What is an intuitive explanation for $\operatorname{div} \operatorname{curl} F = 0$?
Why the down votes?