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REAL AND COMPLEX NUMBERS
Real and complex numbers - basic operations
Division
div1d
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Theorem
div1d
Description:
A number divided by 1 is itself.
(Contributed by
Mario Carneiro
, 27-May-2016)
Ref
Expression
Hypothesis
div1d.1
⊢
φ
→
A
∈
ℂ
Assertion
div1d
⊢
φ
→
A
1
=
A
Proof
Step
Hyp
Ref
Expression
1
div1d.1
⊢
φ
→
A
∈
ℂ
2
div1
⊢
A
∈
ℂ
→
A
1
=
A
3
1
2
syl
⊢
φ
→
A
1
=
A