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Metamath Proof Explorer

Theorem dec0u

Description: Add a zero in the units place. (Contributed by Mario Carneiro, 17-Apr-2015) (Revised by AV, 6-Sep-2021)

		Ref	Expression
	Hypothesis	dec0u.1	$⊢ A \in ℕ_{0}$
	Assertion	dec0u	Could not format assertion : No typesetting found for \|- ( ; 1 0 x. A ) = ; A 0 with typecode \|-

Step	Hyp	Ref	Expression
1		dec0u.1	$⊢ A \in ℕ_{0}$
2		10nn0	$⊢ 10 \in ℕ_{0}$
3	2 1	num0u	$⊢ 10 A = 10 A + 0$
4		dfdec10	Could not format ; A 0 = ( ( ; 1 0 x. A ) + 0 ) : No typesetting found for \|- ; A 0 = ( ( ; 1 0 x. A ) + 0 ) with typecode \|-
5	3 4	eqtr4i	Could not format ( ; 1 0 x. A ) = ; A 0 : No typesetting found for \|- ( ; 1 0 x. A ) = ; A 0 with typecode \|-