Reputation
7,481
Top tag
Next privilege 10,000 Rep.
Access moderator tools
Badges
8 24
Newest
 Necromancer
Impact
~62k people reached

Feb
16
answered Derivation of the Boltzmann factor in statistical mechanics
Feb
15
revised Finding a value from 5 systems of equations of 5 variables(CHMMC 2014)
fixed +/- errors and fixed variable names
Feb
15
answered Finding a value from 5 systems of equations of 5 variables(CHMMC 2014)
Feb
12
comment For what values of $x$ will $ax^2+b$ be perfect squares?
solve in integers: $ax^2 - y^2 = b$ math.stackexchange.com/questions/8684/…
Feb
11
comment Variants of the change-of-variables formula
amazon.com/Geometric-Integration-Theory-Dover-Mathematics/dp/…
Feb
8
comment Minimal circle containing set of points
@brick it's unique because otherwise you can build a circle containing all the points, smaller than your original two "minimum" circles.
Feb
8
revised Minimal circle containing set of points
added 501 characters in body
Feb
8
revised Minimal circle containing set of points
found an important graphic
Feb
8
comment Minimal circle containing set of points
@brick the convex hull is a more delicate object than a circle, which is why I tried to do without it. My original two-line proof still works. The rest of the discussion is trying to construct the new minimizing circle $C_1$.
Feb
8
revised Minimal circle containing set of points
discussion of convex hulls
Feb
8
comment Minimal circle containing set of points
@brick You are correct, e.g. take $\{ 0, 1 \} \subset \mathbb{C}$ and adjoin the point $p = i$ in the complex plane. The minimal circles cut each other. We can still do induction where $C_1$ must surround $p$ and the convex hull of $x_1, \dots, x_n$.
Feb
8
revised Minimal circle containing set of points
relate to the problem of appolonius
Feb
8
answered Minimal circle containing set of points
Feb
6
comment Proving that $\int_{\mathbb{R}} f \ d\mu = \frac{1}{N}\sum_{i=1}^N f(\lambda_i)$
@Integral this seems like making a simple question really complicated. can't you define direc measure this way? $$ \int_{\mathbb{R}} f \ d\mu = \frac{1}{N}\sum_{i=1}^N f(\lambda_i)$$
Feb
5
revised Are there any differences between tensors and multidimensional arrays?
added 741 characters in body
Feb
5
revised Are there any differences between tensors and multidimensional arrays?
added 741 characters in body
Feb
5
answered Are there any differences between tensors and multidimensional arrays?
Feb
5
comment Are there any differences between tensors and multidimensional arrays?
math.stackexchange.com/questions/10282/…
Jan
30
revised Terence Tao, Analysis 1. Exercise 5.3.2. Real Numbers and Cauchy Sequences.
added 813 characters in body
Jan
30
answered Terence Tao, Analysis 1. Exercise 5.3.2. Real Numbers and Cauchy Sequences.