25,126 reputation
163146
bio website rybu.org
location Victoria, BC
age 41
visits member for 5 years, 2 months
seen 2 hours ago
I'm a professor of mathematics at the University of Victoria, in BC Canada.

6h
awarded  Notable Question
22h
comment algebraic topology and 3d/4d printing
@Asaf: Yes, of course, that's why I put the math-and-art tag on the question.
1d
reviewed Close Local rotations to world rotations
1d
comment Local rotations to world rotations
You will want to turn your angles into a rotation matrix, in the special orthogonal group $SO_3$, from there you can convert using matrix multiplication. But you will have to settle on a precise convention for what all your "angles" mean. It looks like you might be using some kind of Euler Angle setup but from what you've said, I don't have enough information. math.stackexchange.com is the appropriate place for your question.
2d
reviewed Close Generating random variables from the Cantor Distribution
2d
reviewed Close What are “small” finite groups with “exponentially” large expansion?
2d
reviewed Close Book on Convergence Concepts in Probability without Measure Theory
2d
reviewed Close perfect numbers and their properties
2d
reviewed Close Approximating an arbitrary $\sigma$-algebra by simpler $\sigma$-algebras
2d
comment Fox re-imbedding theorem in dimension four
I had asked a similar question one of my papers, on embedding 3-manifolds in $S^4$. If a $3$-manifold admits a smooth embedding in $S^4$ is it possible to re-embed it so that fundamental groups of the two exterior components have solvable word problem?
2d
revised How to see isometries of figure 8 knot complement
fix broken link
2d
comment Fox re-imbedding theorem in dimension four
I just stumbled upon your question. My brain isn't quite tuned to it yet, but the Lickorish paper "Knotted contractible 4-manifolds in $S^4$" seems potentially relevant. This is in Pac. J. Math, 208 no. 2 (2003).
2d
reviewed Close rational point of a curve
2d
reviewed Close Discrete J-method of interpolation
2d
reviewed Close A linear operator on $M_{n}(\mathbb{R})$
2d
reviewed Close group homomorphisms from the real line to infinite torsion abelian groups
Jan
22
reviewed Close Maximal independent sets in a graph $G$ versus maximal matchings in the line graph $L(G)$
Jan
22
reviewed Close About a completion of a Sobolev space
Jan
22
reviewed Close Gauge theory on a trivial bundle
Jan
22
reviewed Close cartan killing metric