FDL > PVS > Graphs > subgraphs > finite vert subset > pf:finite vert subset > 1 > 1 > 1 > 1 > 1 (2 nodes)

Conclusion

1. subset?(LAMBDA i:T : vert(G!1)(i) AND V!1(i), vert(G!1))
2. is finite(LAMBDA i:T : vert(G!1)(i) AND V!1(i))