Three-coloring triangle-free graphs on surfaces IV. Bounding face sizes of 4-critical graphs

Zdenek Dvorák, Daniel Král', Robin Thomas 0001. Three-coloring triangle-free graphs on surfaces IV. Bounding face sizes of 4-critical graphs. J. Comb. Theory, Ser. B, 150:270-304, 2021. [doi]

Abstract

Abstract is missing.