Database
REAL AND COMPLEX NUMBERS
Elementary integer functions
The floor and ceiling functions
reflcl
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fllelt
Metamath Proof Explorer
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Theorem
reflcl
Description:
The floor (greatest integer) function is real.
(Contributed by
NM
, 15-Jul-2008)
Ref
Expression
Assertion
reflcl
⊢
A
∈
ℝ
→
A
∈
ℝ
Proof
Step
Hyp
Ref
Expression
1
flcl
⊢
A
∈
ℝ
→
A
∈
ℤ
2
1
zred
⊢
A
∈
ℝ
→
A
∈
ℝ