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Theorem swrdwrdsymbg 11356

Description: A subword is a word over the symbols it consists of. (Contributed by AV, 2-Dec-2022.)

**Assertion**
Ref	Expression
swrdwrdsymbg	⊢ ((𝑆 ∈ Word 𝐴 ∧ 𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → (𝑆 substr ⟨𝑀, 𝑁⟩) ∈ Word (𝑆 “ (𝑀..^𝑁)))

Proof of Theorem swrdwrdsymbg Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		swrdval2 11343	. . . 4 ⊢ ((𝑆 ∈ Word 𝐴 ∧ 𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → (𝑆 substr ⟨𝑀, 𝑁⟩) = (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))))
2	1	3expb 1231	. . 3 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑆 substr ⟨𝑀, 𝑁⟩) = (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))))
3		wrdf 11230	. . . . . . . . . 10 ⊢ (𝑆 ∈ Word 𝐴 → 𝑆:(0..^(♯‘𝑆))⟶𝐴)
4	3	ffund 5512	. . . . . . . . 9 ⊢ (𝑆 ∈ Word 𝐴 → Fun 𝑆)
5	4	adantr 276	. . . . . . . 8 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → Fun 𝑆)
6	5	adantr 276	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → Fun 𝑆)
7		wrddm 11232	. . . . . . . . 9 ⊢ (𝑆 ∈ Word 𝐴 → dom 𝑆 = (0..^(♯‘𝑆)))
8		elfzodifsumelfzo 10546	. . . . . . . . . . . . 13 ⊢ ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) → (𝑥 + 𝑀) ∈ (0..^(♯‘𝑆))))
9	8	imp 124	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → (𝑥 + 𝑀) ∈ (0..^(♯‘𝑆)))
10	9	adantl 277	. . . . . . . . . . 11 ⊢ ((dom 𝑆 = (0..^(♯‘𝑆)) ∧ ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀)))) → (𝑥 + 𝑀) ∈ (0..^(♯‘𝑆)))
11		eleq2 2296	. . . . . . . . . . . 12 ⊢ (dom 𝑆 = (0..^(♯‘𝑆)) → ((𝑥 + 𝑀) ∈ dom 𝑆 ↔ (𝑥 + 𝑀) ∈ (0..^(♯‘𝑆))))
12	11	adantr 276	. . . . . . . . . . 11 ⊢ ((dom 𝑆 = (0..^(♯‘𝑆)) ∧ ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀)))) → ((𝑥 + 𝑀) ∈ dom 𝑆 ↔ (𝑥 + 𝑀) ∈ (0..^(♯‘𝑆))))
13	10, 12	mpbird 167	. . . . . . . . . 10 ⊢ ((dom 𝑆 = (0..^(♯‘𝑆)) ∧ ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀)))) → (𝑥 + 𝑀) ∈ dom 𝑆)
14	13	exp32 365	. . . . . . . . 9 ⊢ (dom 𝑆 = (0..^(♯‘𝑆)) → ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) → (𝑥 + 𝑀) ∈ dom 𝑆)))
15	7, 14	syl 14	. . . . . . . 8 ⊢ (𝑆 ∈ Word 𝐴 → ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) → (𝑥 + 𝑀) ∈ dom 𝑆)))
16	15	imp31 256	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → (𝑥 + 𝑀) ∈ dom 𝑆)
17		simpr 110	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → 𝑥 ∈ (0..^(𝑁 − 𝑀)))
18		elfzelz 10359	. . . . . . . . . . 11 ⊢ (𝑁 ∈ (0...(♯‘𝑆)) → 𝑁 ∈ ℤ)
19	18	adantl 277	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → 𝑁 ∈ ℤ)
20	19	adantl 277	. . . . . . . . 9 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → 𝑁 ∈ ℤ)
21	20	adantr 276	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → 𝑁 ∈ ℤ)
22		elfzelz 10359	. . . . . . . . . 10 ⊢ (𝑀 ∈ (0...𝑁) → 𝑀 ∈ ℤ)
23	22	ad2antrl 490	. . . . . . . . 9 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → 𝑀 ∈ ℤ)
24	23	adantr 276	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → 𝑀 ∈ ℤ)
25		fzoaddel2 10535	. . . . . . . 8 ⊢ ((𝑥 ∈ (0..^(𝑁 − 𝑀)) ∧ 𝑁 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑥 + 𝑀) ∈ (𝑀..^𝑁))
26	17, 21, 24, 25	syl3anc 1274	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → (𝑥 + 𝑀) ∈ (𝑀..^𝑁))
27		funfvima 5918	. . . . . . . 8 ⊢ ((Fun 𝑆 ∧ (𝑥 + 𝑀) ∈ dom 𝑆) → ((𝑥 + 𝑀) ∈ (𝑀..^𝑁) → (𝑆‘(𝑥 + 𝑀)) ∈ (𝑆 “ (𝑀..^𝑁))))
28	27	imp 124	. . . . . . 7 ⊢ (((Fun 𝑆 ∧ (𝑥 + 𝑀) ∈ dom 𝑆) ∧ (𝑥 + 𝑀) ∈ (𝑀..^𝑁)) → (𝑆‘(𝑥 + 𝑀)) ∈ (𝑆 “ (𝑀..^𝑁)))
29	6, 16, 26, 28	syl21anc 1273	. . . . . 6 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → (𝑆‘(𝑥 + 𝑀)) ∈ (𝑆 “ (𝑀..^𝑁)))
30	29	fmpttd 5832	. . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))):(0..^(𝑁 − 𝑀))⟶(𝑆 “ (𝑀..^𝑁)))
31		simpll 527	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → 𝑆 ∈ Word 𝐴)
32		elfzoelz 10481	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ (0..^(𝑁 − 𝑀)) → 𝑥 ∈ ℤ)
33	32	adantl 277	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → 𝑥 ∈ ℤ)
34	33, 24	zaddcld 9704	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → (𝑥 + 𝑀) ∈ ℤ)
35		fvexg 5689	. . . . . . . . . . . 12 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑥 + 𝑀) ∈ ℤ) → (𝑆‘(𝑥 + 𝑀)) ∈ V)
36	31, 34, 35	syl2anc 411	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) ∧ 𝑥 ∈ (0..^(𝑁 − 𝑀))) → (𝑆‘(𝑥 + 𝑀)) ∈ V)
37	36	ralrimiva 2615	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → ∀𝑥 ∈ (0..^(𝑁 − 𝑀))(𝑆‘(𝑥 + 𝑀)) ∈ V)
38		eqid 2232	. . . . . . . . . . 11 ⊢ (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))) = (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))
39	38	fnmpt 5485	. . . . . . . . . 10 ⊢ (∀𝑥 ∈ (0..^(𝑁 − 𝑀))(𝑆‘(𝑥 + 𝑀)) ∈ V → (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))) Fn (0..^(𝑁 − 𝑀)))
40	37, 39	syl 14	. . . . . . . . 9 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))) Fn (0..^(𝑁 − 𝑀)))
41		0z 9588	. . . . . . . . . . 11 ⊢ 0 ∈ ℤ
42		elfzel2 10357	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ (0...𝑁) → 𝑁 ∈ ℤ)
43	42, 22	zsubcld 9705	. . . . . . . . . . 11 ⊢ (𝑀 ∈ (0...𝑁) → (𝑁 − 𝑀) ∈ ℤ)
44		fzofig 10794	. . . . . . . . . . 11 ⊢ ((0 ∈ ℤ ∧ (𝑁 − 𝑀) ∈ ℤ) → (0..^(𝑁 − 𝑀)) ∈ Fin)
45	41, 43, 44	sylancr 414	. . . . . . . . . 10 ⊢ (𝑀 ∈ (0...𝑁) → (0..^(𝑁 − 𝑀)) ∈ Fin)
46	45	ad2antrl 490	. . . . . . . . 9 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (0..^(𝑁 − 𝑀)) ∈ Fin)
47		fihashfn 11164	. . . . . . . . 9 ⊢ (((𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))) Fn (0..^(𝑁 − 𝑀)) ∧ (0..^(𝑁 − 𝑀)) ∈ Fin) → (♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))) = (♯‘(0..^(𝑁 − 𝑀))))
48	40, 46, 47	syl2anc 411	. . . . . . . 8 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))) = (♯‘(0..^(𝑁 − 𝑀))))
49		fznn0sub 10391	. . . . . . . . . 10 ⊢ (𝑀 ∈ (0...𝑁) → (𝑁 − 𝑀) ∈ ℕ₀)
50		hashfzo0 11188	. . . . . . . . . 10 ⊢ ((𝑁 − 𝑀) ∈ ℕ₀ → (♯‘(0..^(𝑁 − 𝑀))) = (𝑁 − 𝑀))
51	49, 50	syl 14	. . . . . . . . 9 ⊢ (𝑀 ∈ (0...𝑁) → (♯‘(0..^(𝑁 − 𝑀))) = (𝑁 − 𝑀))
52	51	ad2antrl 490	. . . . . . . 8 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (♯‘(0..^(𝑁 − 𝑀))) = (𝑁 − 𝑀))
53	48, 52	eqtrd 2265	. . . . . . 7 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))) = (𝑁 − 𝑀))
54	53	oveq2d 6066	. . . . . 6 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (0..^(♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))))) = (0..^(𝑁 − 𝑀)))
55	54	feq2d 5496	. . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → ((𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))):(0..^(♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))))⟶(𝑆 “ (𝑀..^𝑁)) ↔ (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))):(0..^(𝑁 − 𝑀))⟶(𝑆 “ (𝑀..^𝑁))))
56	30, 55	mpbird 167	. . . 4 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))):(0..^(♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))))⟶(𝑆 “ (𝑀..^𝑁)))
57	49	ad2antrl 490	. . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑁 − 𝑀) ∈ ℕ₀)
58	53, 57	eqeltrd 2309	. . . 4 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))) ∈ ℕ₀)
59		iswrdinn0 11229	. . . 4 ⊢ (((𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))):(0..^(♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))))⟶(𝑆 “ (𝑀..^𝑁)) ∧ (♯‘(𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀)))) ∈ ℕ₀) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))) ∈ Word (𝑆 “ (𝑀..^𝑁)))
60	56, 58, 59	syl2anc 411	. . 3 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑥 ∈ (0..^(𝑁 − 𝑀)) ↦ (𝑆‘(𝑥 + 𝑀))) ∈ Word (𝑆 “ (𝑀..^𝑁)))
61	2, 60	eqeltrd 2309	. 2 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆)))) → (𝑆 substr ⟨𝑀, 𝑁⟩) ∈ Word (𝑆 “ (𝑀..^𝑁)))
62	61	3impb 1226	1 ⊢ ((𝑆 ∈ Word 𝐴 ∧ 𝑀 ∈ (0...𝑁) ∧ 𝑁 ∈ (0...(♯‘𝑆))) → (𝑆 substr ⟨𝑀, 𝑁⟩) ∈ Word (𝑆 “ (𝑀..^𝑁)))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 1005 = wceq 1398 ∈ wcel 2203 ∀wral 2520 Vcvv 2813 ⟨cop 3692 ↦ cmpt 4171 dom cdm 4749 “ cima 4752 Fun wfun 5346 Fn wfn 5347 ⟶wf 5348 ‘cfv 5352 (class class class)co 6050 Fincfn 6975 0cc0 8127 + caddc 8130 − cmin 8444 ℕ₀cn0 9496 ℤcz 9577 ...cfz 10342 ..^cfzo 10476 ♯chash 11138 Word cword 11224 substr csubstr 11337

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4225 ax-sep 4228 ax-nul 4236 ax-pow 4287 ax-pr 4322 ax-un 4554 ax-setind 4659 ax-iinf 4710 ax-cnex 8218 ax-resscn 8219 ax-1cn 8220 ax-1re 8221 ax-icn 8222 ax-addcl 8223 ax-addrcl 8224 ax-mulcl 8225 ax-addcom 8227 ax-addass 8229 ax-distr 8231 ax-i2m1 8232 ax-0lt1 8233 ax-0id 8235 ax-rnegex 8236 ax-cnre 8238 ax-pre-ltirr 8239 ax-pre-ltwlin 8240 ax-pre-lttrn 8241 ax-pre-apti 8242 ax-pre-ltadd 8243

This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2815 df-sbc 3043 df-csb 3139 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-nul 3509 df-if 3621 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-int 3950 df-iun 3993 df-br 4110 df-opab 4172 df-mpt 4173 df-tr 4209 df-id 4414 df-iord 4487 df-on 4489 df-ilim 4490 df-suc 4492 df-iom 4713 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-res 4761 df-ima 4762 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-f1 5357 df-fo 5358 df-f1o 5359 df-fv 5360 df-riota 6003 df-ov 6053 df-oprab 6054 df-mpo 6055 df-1st 6334 df-2nd 6335 df-recs 6536 df-frec 6622 df-1o 6647 df-er 6767 df-en 6976 df-dom 6977 df-fin 6978 df-pnf 8310 df-mnf 8311 df-xr 8312 df-ltxr 8313 df-le 8314 df-sub 8446 df-neg 8447 df-inn 9238 df-n0 9497 df-z 9578 df-uz 9854 df-fz 10343 df-fzo 10477 df-ihash 11139 df-word 11225 df-substr 11338

This theorem is referenced by: pfxwrdsymbg 11382

W3C validator