Definition df-s7 11254

Description: Define the length 7 word constructor. (Contributed by Mario Carneiro, 26-Feb-2016.)

Assertion

Ref	Expression
df-s7	|- <" A B C D E F G "> = ( <" A B C D E F "> ++ <" G "> )

Detailed syntax breakdown of Definition df-s7

Step	Hyp	Ref	Expression
1		cA	. . 3 class A
2		cB	. . 3 class B
3		cC	. . 3 class C
4		cD	. . 3 class D
5		cE	. . 3 class E
6		cF	. . 3 class F
7		cG	. . 3 class G
8	1, 2, 3, 4, 5, 6, 7	cs7 11247	. 2 class <" A B C D E F G ">
9	1, 2, 3, 4, 5, 6	cs6 11246	. . 3 class <" A B C D E F ">
10	7	cs1 11109	. . 3 class <" G ">
11		cconcat 11086	. . 3 class ++
12	9, 10, 11	co 5969	. 2 class ( <" A B C D E F "> ++ <" G "> )
13	8, 12	wceq 1373	1 wff <" A B C D E F G "> = ( <" A B C D E F "> ++ <" G "> )

This definition is referenced by:  s7eqd  11268  s7cld  11276