sinks -- returns the sinks of a digraph

Synopsis

Usage:

L = sinks D
Inputs:
- D, a digraph, digraph whose sinks we are searching for
Outputs:
- L, a list, list of all the sinks (if there are any)

Description

A sink of a Digraph D is a vertex of D that has no children. That is, v is a sink of D if and only if there are only edges pointing into v; none can be pointing out (there is no edge of the form (v,u)).

i1 : D = digraph({a,b,c,d,e},{{a,b},{b,c},{b,d},{e,b}});

i2 : sinks D

o2 = {c, d}

o2 : List

Ways to use sinks :

sinks(Digraph)

For the programmer

The object sinks is a method function.

sinks -- returns the sinks of a digraph

Synopsis

Description

See also

Ways to use sinks :

For the programmer