VertexInComponent

VertexInComponent[g, {v1, v2, ...}, k] gives the vertices with a directed path to at least one of v1, v2, … of at most length k.

• VertexInComponent[g, {v1, v2, ...}, {k}] gives the vertices at length exactly k.
• VertexInComponent[{v -> w, ...}, ...] uses rules v -> w to specify the graph g.

Examples

VertexInComponent[Graph[{1 -> 2, 2 -> 3, 3 -> 4}], {4}, 2]

VertexInComponent[Graph[{a -> b, b -> c, a -> c}], {c}, 1]

Please visit the official Wolfram Language Reference for more details.