Let M be a semi-supermanifold represented by a semi-atlas of charts and semi-charts, with semi-transition functions Φαβ between local coordinate domains Uα and Uβ. On pairwise overlaps, triple overlaps, and quadruple overlaps, these functions satisfy the corresponding idempotent composition relations.
Semi-supermanifold semi-transition conjecture. On Uα∩Uβ,
Φαβ∘Φβα∘Φαβ=Φαβ.
On Uα∩Uβ∩Uγ,
Φαβ∘Φβγ∘Φγα∘Φαβ=Φαβ,
Φβγ∘Φγα∘Φαβ∘Φβγ=Φβγ,
Φγα∘Φαβ∘Φβγ∘Φγα=Φγα.
On Uα∩Uβ∩Uγ∩Uρ, the analogous four cyclic relations hold:
Φαβ∘Φβγ∘Φγρ∘Φρα∘Φαβ=Φαβ,
Φβγ∘Φγρ∘Φρα∘Φαβ∘Φβγ=Φβγ,
Φγρ∘Φρα∘Φαβ∘Φβγ∘Φγρ=Φγρ,
Φρα∘Φαβ∘Φβγ∘Φγρ∘Φρα=Φρα.
These relations are proposed as the noninvertible replacement for the usual transition-function cocycle conditions. The source gives no resolution or further justification, so the status is open.