\relax \citation{bauerfeld-medial-pigeonhole} \citation{bauerfeld-nested-tire-decompositions} \citation{bauerfeld-nested-tire-decompositions} \@writefile{toc}{\contentsline {section}{\tocsection {}{1}{Introduction}}{1}{}\protected@file@percent } \@writefile{toc}{\contentsline {section}{\tocsection {}{2}{Background}}{1}{}\protected@file@percent } \citation{bauerfeld-nested-tire-decompositions} \citation{bauerfeld-nested-tire-decompositions} \newlabel{def:medial-graph}{{2.1}{2}} \newlabel{prop:medial-dual-invariance}{{2.3}{2}} \newlabel{cor:tait-medial}{{2.4}{2}} \@writefile{toc}{\contentsline {section}{\tocsection {}{3}{Medial tire pieces}}{2}{}\protected@file@percent } \newlabel{def:full-medial-tire}{{3.1}{2}} \newlabel{thm:annular-medial-colour-bound}{{3.3}{3}} \newlabel{def:annular-teeth}{{3.4}{3}} \newlabel{rem:teeth-sharing}{{3.5}{3}} \newlabel{rem:up-teeth-count}{{3.6}{4}} \newlabel{def:bite}{{3.7}{4}} \newlabel{rem:bite-face-count}{{3.8}{4}} \@writefile{lof}{\contentsline {figure}{\numberline {1}{\ignorespaces A full medial tire graph $\mathsf {M}(T)$ illustrating the tooth terminology. The thick cycle is the annular medial cycle $A(T)$, whose black vertices are the annular medial vertices. Each edge of $A(T)$ carries one tooth: up teeth (blue apexes, outer-boundary medial vertices) point into the outer region, and down teeth (red apexes, inner-boundary medial vertices) point into the inner region. The two down teeth meeting at the central shared apex (larger red vertex) form a bite; that shared apex splits the inner region into two faces, one with four down teeth on its boundary and one with none.}}{4}{}\protected@file@percent } \newlabel{fig:medial-teeth-example}{{1}{4}} \newlabel{def:boundary-medial-vertices}{{3.9}{4}} \citation{bauerfeld-nested-tire-decompositions} \@writefile{lof}{\contentsline {figure}{\numberline {2}{\ignorespaces Three six-face full medial tire graphs found by the boundary-state restriction search. Black vertices are annular medial vertices; blue vertices are outer boundary medial vertices and red vertices are inner boundary medial vertices. The word below each diagram records the outer/inner type of the six annular faces in cyclic order. Boundary states are identified only up to colour permutation, not by rotation or reflection of the boundary order.}}{5}{}\protected@file@percent } \newlabel{fig:medial-restriction-worst-cases}{{2}{5}} \@writefile{lof}{\contentsline {figure}{\numberline {3}{\ignorespaces A proper vertex $3$-colouring of the full medial graph of the first seven-vertex counterexample found by the experiment. The medial vertex labelled $ij$ corresponds to the edge $(i,j)$ of the triangulation. For the vertex-source decomposition at source $1$, the highlighted annular medial cycle has colour counts $(2,2,2)$, so it is not coloured with two colours except at at most one vertex.}}{5}{}\protected@file@percent } \newlabel{fig:medial-annular-cycle-counterexample}{{3}{5}} \newlabel{def:medial-restriction-relation}{{3.10}{5}} \citation{bauerfeld-nested-tire-decompositions} \bibcite{bauerfeld-nested-tire-decompositions}{1} \bibcite{bauerfeld-medial-pigeonhole}{2} \bibcite{tait-original}{3} \newlabel{tocindent-1}{0pt} \newlabel{tocindent0}{12.7778pt} \newlabel{tocindent1}{17.77782pt} \newlabel{tocindent2}{29.38873pt} \newlabel{tocindent3}{0pt} \@writefile{toc}{\contentsline {section}{\tocsection {}{4}{Decomposition}}{6}{}\protected@file@percent } \newlabel{cor:medial-tire-decomposition}{{4.1}{6}} \newlabel{def:compatible-family}{{4.2}{6}} \newlabel{prop:gluing-criterion}{{4.3}{6}} \@writefile{toc}{\contentsline {section}{\tocsection {}{}{References}}{6}{}\protected@file@percent } \gdef \@abspage@last{6}