Why is a connected planar graph isomorphic to its double dual?
$begingroup$
Let $G^*$ be the dual graph of a planar graph $G$ (see wikipedia article). How does one prove that if $G$ is connected then it is isomorphic to $G^{**}$?
graph-isomorphism planar-graph
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
$endgroup$
add a comment |
$begingroup$
Let $G^*$ be the dual graph of a planar graph $G$ (see wikipedia article). How does one prove that if $G$ is connected then it is isomorphic to $G^{**}$?
graph-isomorphism planar-graph
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
$endgroup$
add a comment |
$begingroup$
Let $G^*$ be the dual graph of a planar graph $G$ (see wikipedia article). How does one prove that if $G$ is connected then it is isomorphic to $G^{**}$?
graph-isomorphism planar-graph
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
$endgroup$
Let $G^*$ be the dual graph of a planar graph $G$ (see wikipedia article). How does one prove that if $G$ is connected then it is isomorphic to $G^{**}$?
graph-isomorphism planar-graph
graph-isomorphism planar-graph
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
asked Jan 18 '14 at 17:41
mathemagemathemage
1791211
1791211
add a comment |
add a comment |
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