Theorem s5cli

Description: A length 5 string is a word. (Contributed by Mario Carneiro, 26-Feb-2016)

	Ref	Expression
Assertion	s5cli	$$⊢⟨“ABCDE”⟩\in \mathrm{Word}\mathrm{V}$$

Proof

Step	Hyp	Ref	Expression
1		df-s5	$$⊢⟨“ABCDE”⟩=⟨“ABCD”⟩\mathrm{++}⟨“E”⟩$$
2		s4cli	$$⊢⟨“ABCD”⟩\in \mathrm{Word}\mathrm{V}$$
3	1 2	cats1cli	$$⊢⟨“ABCDE”⟩\in \mathrm{Word}\mathrm{V}$$