Original ledger status
FORM.CAR.01
FORM.CAR.01
Theorem A (carrier rank uniqueness g_car=5) machine-formalised in Lean 4: the Pascal carrier condition 2^(g-1)=C(g,0)+C(g,1)+C(g,2), division-free 2^g=g^2+g+2, has the UNIQUE solution g=5 (theorem carrier_rank_pascal_unique: forall g, 2^g=g^2+g+2 <-> g=5; growth lemma pascal_growth for g>=6; g_car_unique ExistsUnique; carrier_closure_integers N_fam=(2^4-1)/5=3, g+N_fam=8=rank E8). AUDIT: PASS (no sorry/admit, no domain axioms, only propext/Classical.choice/Quot.sound). Complements FORM.P2.02 (P2 carrier algebra)
Recorded status: Formal
Dependencies, status detail and source
Canonical status: Formal [F]
Dependencies: AX.P2.01; CAR.UNIQ.01; v6; v14
Scripts: lean4-carrier-rigidity
Location: tfpt_1;tfpt_3
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