Theorem opsrscaOLD

Description: Obsolete version of opsrsca as of 1-Nov-2024. The scalar ring of the ordered power series structure. (Contributed by Mario Carneiro, 8-Feb-2015) (Revised by Mario Carneiro, 30-Aug-2015) (New usage is discouraged.) (Proof modification is discouraged.)

	Ref	Expression
Hypotheses	opsrbas.s	⊢ 𝑆 = ( 𝐼 mPwSer 𝑅 )
	opsrbas.o	⊢ 𝑂 = ( ( 𝐼 ordPwSer 𝑅 ) ‘ 𝑇 )
	opsrbas.t	⊢ ( 𝜑 → 𝑇 ⊆ ( 𝐼 × 𝐼 ) )
	opsrsca.i	⊢ ( 𝜑 → 𝐼 ∈ 𝑉 )
	opsrsca.r	⊢ ( 𝜑 → 𝑅 ∈ 𝑊 )
Assertion	opsrscaOLD	⊢ ( 𝜑 → 𝑅 = ( Scalar ‘ 𝑂 ) )

Proof

Step	Hyp	Ref	Expression
1		opsrbas.s	⊢ 𝑆 = ( 𝐼 mPwSer 𝑅 )
2		opsrbas.o	⊢ 𝑂 = ( ( 𝐼 ordPwSer 𝑅 ) ‘ 𝑇 )
3		opsrbas.t	⊢ ( 𝜑 → 𝑇 ⊆ ( 𝐼 × 𝐼 ) )
4		opsrsca.i	⊢ ( 𝜑 → 𝐼 ∈ 𝑉 )
5		opsrsca.r	⊢ ( 𝜑 → 𝑅 ∈ 𝑊 )
6	1 4 5	psrsca	⊢ ( 𝜑 → 𝑅 = ( Scalar ‘ 𝑆 ) )
7		df-sca	⊢ Scalar = Slot 5
8		5nn	⊢ 5 ∈ ℕ
9		5lt10	⊢ 5 < ; 1 0
10	1 2 3 7 8 9	opsrbaslemOLD	⊢ ( 𝜑 → ( Scalar ‘ 𝑆 ) = ( Scalar ‘ 𝑂 ) )
11	6 10	eqtrd	⊢ ( 𝜑 → 𝑅 = ( Scalar ‘ 𝑂 ) )