Commit Graph

24 Commits

Author SHA1 Message Date
Aaron Fenyes
6f18d4efcc Test lots of uniformly distributed hyperplanes 2024-02-10 15:10:48 -05:00
Aaron Fenyes
621c4c5776 Try uniformly distributed hyperplane orientations
Unit normals are uniformly distributed over the sphere.
2024-02-10 15:02:26 -05:00
Aaron Fenyes
b3b7c2026d Separate the algebraic and numerical parts of the engine 2024-02-10 14:50:50 -05:00
Aaron Fenyes
af1d31f6e6 Test a scale constraint
In all but a few cases (for example, a single point on a plane), we
should be able to us the radius-coradius boost symmetry to make the
average co-radius—representing the "overall scale"—roughly one.
2024-02-10 14:21:52 -05:00
Aaron Fenyes
8e33987f59 Systematically try out different cut planes 2024-02-10 13:46:01 -05:00
Aaron Fenyes
06872a04af Say how many sample solutions we found 2024-02-10 01:06:06 -05:00
Aaron Fenyes
becefe0c47 Try switching to compiled system 2024-02-10 00:59:50 -05:00
Aaron Fenyes
34358a8728 Find witnesses on random rational hyperplanes
Choose hyperplanes that go through the trivial solution.
2024-02-09 23:44:10 -05:00
Aaron Fenyes
95c0ff14b2 Show explicitly that all coefficients are 1 in first cut equation 2024-02-09 17:09:43 -05:00
Aaron Fenyes
f97090c997 Try a cut that goes through the trivial solution
The previous cut was supposed to do this, but I was missing some parentheses.
2024-02-08 01:58:12 -05:00
Aaron Fenyes
45aaaafc8f Seek sample solutions by cutting with a hyperplane
The example hyperplane yields a single solution, with multiplicity six. You can
find it analytically by hand, and homotopy continuation finds it numerically.
2024-02-08 01:53:55 -05:00
Aaron Fenyes
43cbf8a3a0 Add relations to center and orient the construction 2024-02-05 00:10:13 -05:00
Aaron Fenyes
21f09c4a4d Switch element abbreviation from "elem" to "elt" 2024-02-04 16:08:13 -05:00
Aaron Fenyes
a3f3f6a31b Order spheres before points within each coordinate block
In the cases I've tried so far, this leads to substantially smaller
Gröbner bases.
2024-02-01 16:13:22 -05:00
Aaron Fenyes
65d23fb667 Use module names as filenames
You're right: this naming convention seems to be standard for Julia
modules now.
2024-01-30 02:49:33 -05:00
Aaron Fenyes
4e02ee16fc Find dimension of solution variety 2024-01-30 02:45:14 -05:00
Aaron Fenyes
6349f298ae Extend AbstractAlgebra ideals to rational coefficients
The extension should also let us work over finite fields of prime order,
although we don't need to do that.
2024-01-29 19:11:21 -05:00
Aaron Fenyes
0731c7aac1 Correct relation equations 2024-01-29 12:41:07 -05:00
Aaron Fenyes
59a527af43 Correct Minkowski product; build chain of three spheres 2024-01-29 12:28:57 -05:00
Aaron Fenyes
c29000d912 Write a simple solver for the hitting set problem
I think we need this to find the dimension of the solution variety.
2024-01-28 01:34:13 -05:00
Aaron Fenyes
86dbd9ea45 Order variables by coordinate and then element
In other words, order coordinates like
  (rₛ₁, rₛ₂, sₛ₁, sₛ₂, xₛ₁, xₛ₂, xₚ₃, yₛ₁, yₛ₂, yₚ₃, zₛ₁, zₛ₂, zₚ₃)
instead of like
  (rₛ₁, sₛ₁, xₛ₁, yₛ₁, zₛ₁, rₛ₂, sₛ₂, xₛ₂, yₛ₂, zₛ₂, xₚ₃, yₚ₃, zₚ₃).

In the test cases, this really cuts down the size of the Gröbner basis.
2024-01-27 14:21:03 -05:00
Aaron Fenyes
463a3b21e1 Realize relations as equations 2024-01-27 12:28:29 -05:00
Aaron Fenyes
4d5aa3b327 Realize geometric elements as symbolic vectors 2024-01-26 11:14:32 -05:00
Aaron Fenyes
b864cf7866 Start drafting engine prototype 2024-01-24 11:16:24 -05:00