Real.le_sSup_iff

∀ {s : Set ℝ} {a : ℝ}, BddAbove s → s.Nonempty → (a ≤ sSup s ↔ ∀ ε < 0, ∃ x ∈ s, a + ε < x)

Defined in: Mathlib.Algebra.Order.Archimedean.Real.Basic
Cited by: 0 results in Mathlib
Foundations: Depth 117 from the axioms · uses propext, Classical.choice, Quot.sound

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