binary-path or multi-path

Bye-path value (By-path valve)

join-graph of path and path

light path and optical path length control mirror

the unite of path and path graphs P(m)∨P

sendograph metric endograph metric

(CPM)Critical Path (CPM)

1-path cover

1-path-cycle factor

2D well-path

2kL method of the optical-path difference

3 dimensional flux path

3D center path

3D flight path

3-D path planning

4D flight path

4f cross light path

6 path antenna

8 path antenna