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Redraw n=21 witness figures as crossing-free planar graphs

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Replace the radial (crossing-heavy) figure with two crossing-free planar
drawings (networkx planar_layout / Chrobak-Payne):
  fig:n21-elgs  -- the six witness Even Level Graphs, parity-coloured, with
                   the bridge-switch-flipped edges dashed red;
  fig:n21-duals -- the six resulting duals, with the introduced bridge edges
                   solid green.
ELG and dual are drawn with independent planar layouts so neither has any
edge crossing (a flip diagonal would otherwise cross other edges when its
quadrilateral is non-convex, which happens for duals 0 and 3). Drop forced
equal aspect so panels fill and labels separate.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
didericis
2026-05-22 11:23:36 -04:00
parent 7034f21ad8
commit b3998fbdb3
16 changed files with 140 additions and 103 deletions
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papers/even_level_graph_generators/paper.fdb_latexmk
+6 -5
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# Fdb version 3
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"/Users/didericis/Code/math-research/papers/even_level_graph_generators/paper.tex" 1779461873 15887 19952eaaf0fc5ca355be18e4eff4aaed ""
["pdflatex"] 1779463291 "/Users/didericis/Code/math-research/papers/even_level_graph_generators/paper.tex" "paper.pdf" "paper" 1779463293
"/Users/didericis/Code/math-research/papers/even_level_graph_generators/paper.tex" 1779463291 18288 7a31bbe6e6a18516ee92fc4bff904881 ""
"/usr/local/texlive/2022/texmf-dist/fonts/map/fontname/texfonts.map" 1577235249 3524 cb3e574dea2d1052e39280babc910dc8 ""
"/usr/local/texlive/2022/texmf-dist/fonts/tfm/public/amsfonts/cmextra/cmex7.tfm" 1246382020 1004 54797486969f23fa377b128694d548df ""
"/usr/local/texlive/2022/texmf-dist/fonts/tfm/public/amsfonts/cmextra/cmex8.tfm" 1246382020 988 bdf658c3bfc2d96d3c8b02cfc1c94c20 ""
@@ -90,9 +90,10 @@
"fig_level_cycle.png" 1779389598 83736 ee54074ab1383a0dcc7fc20387e34bdc ""
"fig_levels.png" 1779389598 88029 5564f46c0a183f3777727b651e7dc461 ""
"fig_parity_subgraph.png" 1779389598 191771 f069aa94c8f49b3c7fd9c71426feff2d ""
"paper.aux" 1779461874 5767 d6f46d8ee667b35ce0393ad310fffd64 "pdflatex"
"paper.out" 1779461874 1047 aeccb746cf11915bcb68f1e7ff8075a7 "pdflatex"
"paper.tex" 1779461873 15887 19952eaaf0fc5ca355be18e4eff4aaed ""
"figures/n21_witnesses.png" 1779463145 347960 9cff26f0427b981c675f214ca5cc1513 ""
"paper.aux" 1779463292 7658 3054ab5e5e2c2d6239a5f60f25708981 "pdflatex"
"paper.out" 1779463292 1047 aeccb746cf11915bcb68f1e7ff8075a7 "pdflatex"
"paper.tex" 1779463291 18288 7a31bbe6e6a18516ee92fc4bff904881 ""
(generated)
"paper.aux"
"paper.log"