Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Adding paths and cycles to a main complex. (A) Out-going path added to a complex. Complex and directed path are shown separately on the left and joined on the right. (B) In-coming path added to a complex. (C) Cycle added to a complex. Complexes are shaded and values for Φ are provided in each of the panels.
