New posts in Planar Graphs

Showing that a graph is planar

Planar networks

Proof strategy for 4-Colour-Theorem

Can a graph be non-planar in 3d?

How to solve a "foraging" problem on a directed graph?

How can this planar map be coloured using $4$ colours?

Count of maximal sextic toroidal graphs

Are there only seven 3-connected planar graphs with certain symmetries?

Sketch a 5 regular planar graph, G with $\chi(G)$ = 3.

Is this graph a planar graph or not?