English
For any m ∈ M and a function t: ι → α into a complete lattice α, m • iInf t ≤ ⨅ i, m • t(i).
Русский
Для любого m и функции t: ι → α в \\, α полную решётку, выполняется m • inf_i t ≤ inf_i (m • t(i)).
LaTeX
$$$ [SMul M α] [CompleteLattice α] [CovariantClass M α HSMul LE.le] {m : M} {t : ι → α} : m \\cdot \\inf t \\le \\inf_i (m \\cdot t i). $$$
Lean4
theorem smul_iInf_le [SMul M α] [CompleteLattice α] [CovariantClass M α HSMul.hSMul LE.le] {m : M} {t : ι → α} :
m • iInf t ≤ ⨅ i, m • t i :=
le_iInf fun _ => smul_mono_right _ (iInf_le _ _)