Order 35 = 5 · 7
0 / 1 paper-excluded 0 / 1 Lean-excluded odd candidate
From the paper (Macaj–Siran 2010)
Theorem 6 lists 35 as a surviving odd-order maximum. Lemma 15 row
pq = 35, a₀(x) = 1, a₀(x_5) = 51 is one of two starred
(impossible) rows — so the strongest orbit-shape for an
order-35 element is already excluded by the paper, but the
group-order exclusion is still open.
Per-prime: Lem 18 / Lem 3(1/4/6) gives
Fix(ℤ₅) ∈ {empty, pentagon, HS}; Lem 19(4) gives
Fix(ℤ₇) = star. The single group ℤ₃₅
is not individually excluded — paper-allowed.
(Note: Theorem 7 proof remark "G cannot contain
ℤ₁₀ and ℤ₃₅ with a common
ℤ₅" is a joint constraint that does not apply here in
isolation.)
Natural-language proof (this project)
not yet written
Strategy: combine Lemma 12 / 14 / 15 (the latter with its single
surviving row for pq = 35) into a complete statement.
See Contribute.
Lean formalization (this project)
open
Group classification
| SmallGroup | Group | Description | Paper | Lean |
|---|---|---|---|---|
(35, 1) |
ℤ₃₅ |
Unique up to isomorphism: 5 ∤ 7 − 1 = 6, so by the
p < q Sylow analysis only the cyclic group
exists.
|
allowed | open |