isInvariantBlock — Mathlib

English

Disjointness from the right translates: if B is a block and ¬B ⊆ s·B, then B and s·B are disjoint.

Русский

Дисjointность справа: если B — блок и ¬(B ⊆ s·B), то B и s·B дисjoint.

LaTeX

$$$\text{IsBlock}(M,B) \rightarrow (\neg B \subseteq s\cdot B) \rightarrow Disjoint(B, s\cdot B).$$$

Lean4

/-- A fixed block is an invariant block. -/
@[to_additive /-- A fixed block is an invariant block. -/
    ]
theorem isInvariantBlock (hB : IsFixedBlock G B) : IsInvariantBlock G B := fun _ ↦ (hB _).le

Похожие утверждения