7,968 reputation
823
bio website linkedin.com/in/gt6989b
location New York, NY
age 36
visits member for 3 years, 3 months
seen 2 days ago

Dec
8
comment Graph Theory triangle (3 colors)
I don't understand. If you properly edge-color $K_n$ with $n$ colors, no intersecting edges can have the same color, so any triangle must have distinct colors?
Dec
8
revised Graph Theory triangle (3 colors)
alter tags
Dec
8
answered Derangement formula; proof by induction
Dec
8
answered A good source for linear algebra on matrices
Dec
8
comment A good source for linear algebra on matrices
So you need something for abstract algebra with examples from linear algebra, or linear agebra theory, like vector spaces?
Dec
8
comment How can I rotate a point 45 degrees counterclockwise around any point?
@Nichols you are likely better off with $x' = x \cos \theta - y \sin \theta$
Dec
8
comment Finding Transformation inverse
@lllll this is only true about linear transformations from $\mathbb{R}^m$ to $\mathbb{R}^n$, you are transforming a function space.
Dec
8
answered How can I rotate a point 45 degrees counterclockwise around any point?
Dec
8
answered Finding Transformation inverse
Dec
8
awarded  Caucus
Dec
8
answered random variables (X,Y) have the following joint PDF
Dec
8
revised random variables (X,Y) have the following joint PDF
LaTeX
Dec
8
comment optimization with non smooth constraint
@JesseRJ MATLAB is not a good solver. Maybe CVXOPT? abel.ee.ucla.edu/cvxopt/examples/index.html There are others that are free. The best paid one is CPLEX sold by IBM
Dec
8
comment optimization with non smooth constraint
@JesseRJ Modern optimizers have a special type for that constraint.
Dec
8
comment optimization with non smooth constraint
@JesseRJ are you using linear optimization only, or can you have binary variables?
Dec
8
comment optimization with non smooth constraint
@JesseRJ I don't understand your comment, likely a part got deleted by accident?
Dec
8
answered express vector with other vectors
Dec
8
answered optimization with non smooth constraint
Dec
8
comment Find $\lim_{x \to -8} \frac{\sqrt{1 - x} - 3 }{ 2 + \sqrt[3] {x}}$
@omidh Please see the update, can you finish it now? Feel free to accept the solution when you understand it to the end...
Dec
8
revised Find $\lim_{x \to -8} \frac{\sqrt{1 - x} - 3 }{ 2 + \sqrt[3] {x}}$
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