597 reputation
312
bio website darwinbots.com
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visits member for 3 years, 4 months
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I'm a programmer in the video game industry, working with physics engines. In my spare time, I'm working on an engine for a physically simulated artificial life simulator (Darwinbots). My mathematical interests primarily stem from that, and delve in to linear algebra and numerical analysis.


Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jul
1
comment Rank degenerate non negative least squares
Ah, interesting, I'll have to explore that.
Jul
1
asked Rank degenerate non negative least squares
Jun
16
comment Sufficient condition for a simple polygon
@DanielRust - If the polygon is already simple, you can verify that in $O(n log(n))$. But if the parameterization/control scheme of the polygon/cell simply can't produce a complex polygon, that makes life much easier for me.
Jun
15
comment Sufficient condition for a simple polygon
@DanielRust - Even using efficient line-line intersection tests you're looking at O(n log(n)), which is too much :/
Jun
15
asked Sufficient condition for a simple polygon
May
7
comment Numerically integrating in to Chebyshev polynomial
In the end I just took the dense output polynomial/spline from Dormand-Prince and used it to find the values at the Chebyshev points.
May
2
comment LDL decomposition and pseudoinverse
Thanks that makes a lot of sense :)
May
2
accepted LDL decomposition and pseudoinverse
May
1
asked LDL decomposition and pseudoinverse
Apr
30
comment Least squares invariant under transformation?
Thanks! That's a very illuminating example.
Apr
30
accepted Least squares invariant under transformation?
Apr
29
asked Least squares invariant under transformation?
Apr
16
asked Least squares of symmetric positive semidefinite matrices
Feb
19
comment Chebyshev polynomials with non-negative constants
Assuming the original coefficients of the monomial form are all positive, the coefficients in the Chebyshev form should also be positive. That follows from the above identity for $x^N$.
Feb
18
revised Chebyshev polynomials with non-negative constants
added 170 characters in body
Feb
18
revised Chebyshev polynomials with non-negative constants
added 28 characters in body
Feb
18
answered Chebyshev polynomials with non-negative constants
Feb
16
asked Can this binomial coefficient term be simplified?