Question

Use a single Kempe chain switch to properly 4-color the graph below. Note that V is the only uncolored vertex.

Spac... Heading 1 Heading 2 Paragraph Put any details. Styles Red Blue Blue Green) o Yellow Green Blue that a thickness-twn praph (Earth-Moon graph) can be properly colored wi

Answer 1

Red Blue Blue Green Yellow Green Blue

1-->>An algorithmic method of coloring plane graphs that sometimes yields a proper vertex coloring requiring four or fewer colors.

Through a single Kempe chain switch to properly 4-color the graph.

RED-BLUE-GREEN-YELLOW(but V is the only uncoloured vertex).

2-->>A thickness-two graph (Earth-Moon graph) can be properly colored with 12 colors.

Trivial with planar graph with at most 6 vertices. We can easily produce a 6 coloring with one color for each vertex.