New posts in Planar Graphs

Graph Theory proving planarity

4-regular planar graph is unique?

Four color theorem disproof?

Going with/against the orientation alternates along the Hamilton cycle?

Every simple planar graph with $\delta\geq 3$ has an adjacent pair with $deg(u)+deg(v)\leq 13$

Olympiad : The maximum number of pairs whose distance is $1$ when any pairwise distance is at least $1$

Algorithm for planarity test in graphs

Hard planar graph problem

There is a 3-connected 5-regular simple $n$-vertex planar graph iff $n$ satisfies....?

A conjecture on planar graphs