Database
REAL AND COMPLEX NUMBERS
Integer sets
Rational numbers (as a subset of complex numbers)
qred
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Metamath Proof Explorer
Ascii
Unicode
Theorem
qred
Description:
A rational number is a real number.
(Contributed by
Glauco Siliprandi
, 26-Jun-2021)
Ref
Expression
Hypothesis
qred.1
⊢
φ
→
A
∈
ℚ
Assertion
qred
⊢
φ
→
A
∈
ℝ
Proof
Step
Hyp
Ref
Expression
1
qred.1
⊢
φ
→
A
∈
ℚ
2
qre
⊢
A
∈
ℚ
→
A
∈
ℝ
3
1
2
syl
⊢
φ
→
A
∈
ℝ