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.
2D representation of a Merge Tree, with time mapped to the horizontal axis. In the tree representation, nodes represent halos, and the arcs represent merging and splitting operations. Note how halos merge, get created, or disappear through time.
