# Brewster, Richard C.

## Cycles in Graphs of Large Chromatic Number ★★

Author(s): Brewster; McGuinness; Moore; Noel

**Conjecture**If , then contains at least cycles of length .

Keywords: chromatic number; cycles

## Mixing Circular Colourings ★

**Question**Is always rational?

Keywords: discrete homotopy; graph colourings; mixing