Openings
Index Entry
Openings:
"There are no surfaces. Therefore there are no areas. So Euler's topological aspects have to be altered to read: "lines" = trajectories; "vertexes" = crossings; and "areas" = openings, i.e., where there are no trajectories or crossings. This relates to systems."
Citations
- RBF to EJA, Somerset Club, Boston, 22 April 1971
