minimum vertex-covering

Bin covering problem

Covering problem

Key Covering Problem

Minimal covering problem

minimal set-covering problem

Planar covering problem

set covering problem SCP

set-covering problem

probabilistic location set covering problem

convex vertex and concave vertex

vertex-edge adjacent vertex-distinguishing total c

Developing Problem Situation Problem Posing

Developing Problem Situations Problem Posing

Fermi-Pasta-Ulam problem， FPU problem

linear programming problem LP problem

servo problem servomechanism-type problem

servomechanism-type problem servo problem

10 vertex close heteroboranes