Theorem tngscaOLD

Description: Obsolete proof of tngsca as of 31-Oct-2024. The scalar ring of a structure augmented with a norm. (Contributed by Mario Carneiro, 2-Oct-2015) (New usage is discouraged.) (Proof modification is discouraged.)

	Ref	Expression
Hypotheses	tngbas.t	$$⊢T=G\mathrm{toNrmGrp}N$$
	tngsca.2	$$⊢F=\mathrm{Scalar}\left(G\right)$$
Assertion	tngscaOLD	$$⊢N\in V\to F=\mathrm{Scalar}\left(T\right)$$

Proof

Step	Hyp	Ref	Expression
1		tngbas.t	$$⊢T=G\mathrm{toNrmGrp}N$$
2		tngsca.2	$$⊢F=\mathrm{Scalar}\left(G\right)$$
3		df-sca	$$⊢\mathrm{Scalar}=\mathrm{Slot}5$$
4		5nn	$$⊢5\in \mathbb{N}$$
5		5lt9	$$⊢5<9$$
6	1 3 4 5	tnglemOLD	$$⊢N\in V\to \mathrm{Scalar}\left(G\right)=\mathrm{Scalar}\left(T\right)$$
7	2 6	eqtrid	$$⊢N\in V\to F=\mathrm{Scalar}\left(T\right)$$