Metamath Proof Explorer


Theorem flle

Description: A basic property of the floor (greatest integer) function. (Contributed by NM, 24-Feb-2005)

Ref Expression
Assertion flle ⊢ A ∈ ℝ → A ≤ A

Proof

Step Hyp Ref Expression
1 fllelt ⊢ A ∈ ℝ → A ≤ A ∧ A < A + 1
2 1 simpld ⊢ A ∈ ℝ → A ≤ A