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Theorem ccatrn 14222

Description: The range of a concatenated word. (Contributed by Stefan O'Rear, 15-Aug-2015.)

**Assertion**
Ref	Expression
ccatrn	⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ran (𝑆 ++ 𝑇) = (ran 𝑆 ∪ ran 𝑇))

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

Step	Hyp	Ref	Expression
1		ccatvalfn 14214	. . . 4 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (𝑆 ++ 𝑇) Fn (0..^((♯‘𝑆) + (♯‘𝑇))))
2		lencl 14164	. . . . . . . . . . . 12 ⊢ (𝑆 ∈ Word 𝐵 → (♯‘𝑆) ∈ ℕ₀)
3		nn0uz 12549	. . . . . . . . . . . 12 ⊢ ℕ₀ = (ℤ_≥‘0)
4	2, 3	eleqtrdi 2849	. . . . . . . . . . 11 ⊢ (𝑆 ∈ Word 𝐵 → (♯‘𝑆) ∈ (ℤ_≥‘0))
5	4	adantr 480	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (♯‘𝑆) ∈ (ℤ_≥‘0))
6	2	nn0zd 12353	. . . . . . . . . . . 12 ⊢ (𝑆 ∈ Word 𝐵 → (♯‘𝑆) ∈ ℤ)
7	6	uzidd 12527	. . . . . . . . . . 11 ⊢ (𝑆 ∈ Word 𝐵 → (♯‘𝑆) ∈ (ℤ_≥‘(♯‘𝑆)))
8		lencl 14164	. . . . . . . . . . 11 ⊢ (𝑇 ∈ Word 𝐵 → (♯‘𝑇) ∈ ℕ₀)
9		uzaddcl 12573	. . . . . . . . . . 11 ⊢ (((♯‘𝑆) ∈ (ℤ_≥‘(♯‘𝑆)) ∧ (♯‘𝑇) ∈ ℕ₀) → ((♯‘𝑆) + (♯‘𝑇)) ∈ (ℤ_≥‘(♯‘𝑆)))
10	7, 8, 9	syl2an 595	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ((♯‘𝑆) + (♯‘𝑇)) ∈ (ℤ_≥‘(♯‘𝑆)))
11		elfzuzb 13179	. . . . . . . . . 10 ⊢ ((♯‘𝑆) ∈ (0...((♯‘𝑆) + (♯‘𝑇))) ↔ ((♯‘𝑆) ∈ (ℤ_≥‘0) ∧ ((♯‘𝑆) + (♯‘𝑇)) ∈ (ℤ_≥‘(♯‘𝑆))))
12	5, 10, 11	sylanbrc 582	. . . . . . . . 9 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (♯‘𝑆) ∈ (0...((♯‘𝑆) + (♯‘𝑇))))
13		fzosplit 13348	. . . . . . . . 9 ⊢ ((♯‘𝑆) ∈ (0...((♯‘𝑆) + (♯‘𝑇))) → (0..^((♯‘𝑆) + (♯‘𝑇))) = ((0..^(♯‘𝑆)) ∪ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))))
14	12, 13	syl 17	. . . . . . . 8 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (0..^((♯‘𝑆) + (♯‘𝑇))) = ((0..^(♯‘𝑆)) ∪ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))))
15	14	eleq2d 2824	. . . . . . 7 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇))) ↔ 𝑥 ∈ ((0..^(♯‘𝑆)) ∪ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))))))
16		elun 4079	. . . . . . 7 ⊢ (𝑥 ∈ ((0..^(♯‘𝑆)) ∪ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) ↔ (𝑥 ∈ (0..^(♯‘𝑆)) ∨ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))))
17	15, 16	bitrdi 286	. . . . . 6 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇))) ↔ (𝑥 ∈ (0..^(♯‘𝑆)) ∨ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))))))
18		ccatval1 14209	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵 ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → ((𝑆 ++ 𝑇)‘𝑥) = (𝑆‘𝑥))
19	18	3expa 1116	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → ((𝑆 ++ 𝑇)‘𝑥) = (𝑆‘𝑥))
20		ssun1 4102	. . . . . . . . . 10 ⊢ ran 𝑆 ⊆ (ran 𝑆 ∪ ran 𝑇)
21		wrdfn 14159	. . . . . . . . . . . 12 ⊢ (𝑆 ∈ Word 𝐵 → 𝑆 Fn (0..^(♯‘𝑆)))
22	21	adantr 480	. . . . . . . . . . 11 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → 𝑆 Fn (0..^(♯‘𝑆)))
23		fnfvelrn 6940	. . . . . . . . . . 11 ⊢ ((𝑆 Fn (0..^(♯‘𝑆)) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → (𝑆‘𝑥) ∈ ran 𝑆)
24	22, 23	sylan 579	. . . . . . . . . 10 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → (𝑆‘𝑥) ∈ ran 𝑆)
25	20, 24	sselid 3915	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → (𝑆‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇))
26	19, 25	eqeltrd 2839	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇))
27		ccatval2 14211	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵 ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑆 ++ 𝑇)‘𝑥) = (𝑇‘(𝑥 − (♯‘𝑆))))
28	27	3expa 1116	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑆 ++ 𝑇)‘𝑥) = (𝑇‘(𝑥 − (♯‘𝑆))))
29		ssun2 4103	. . . . . . . . . 10 ⊢ ran 𝑇 ⊆ (ran 𝑆 ∪ ran 𝑇)
30		wrdfn 14159	. . . . . . . . . . . 12 ⊢ (𝑇 ∈ Word 𝐵 → 𝑇 Fn (0..^(♯‘𝑇)))
31	30	adantl 481	. . . . . . . . . . 11 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → 𝑇 Fn (0..^(♯‘𝑇)))
32		elfzouz 13320	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))) → 𝑥 ∈ (ℤ_≥‘(♯‘𝑆)))
33		uznn0sub 12546	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ (ℤ_≥‘(♯‘𝑆)) → (𝑥 − (♯‘𝑆)) ∈ ℕ₀)
34	32, 33	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))) → (𝑥 − (♯‘𝑆)) ∈ ℕ₀)
35	34, 3	eleqtrdi 2849	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))) → (𝑥 − (♯‘𝑆)) ∈ (ℤ_≥‘0))
36	35	adantl 481	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (𝑥 − (♯‘𝑆)) ∈ (ℤ_≥‘0))
37	8	nn0zd 12353	. . . . . . . . . . . . 13 ⊢ (𝑇 ∈ Word 𝐵 → (♯‘𝑇) ∈ ℤ)
38	37	ad2antlr 723	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (♯‘𝑇) ∈ ℤ)
39		elfzolt2 13325	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))) → 𝑥 < ((♯‘𝑆) + (♯‘𝑇)))
40	39	adantl 481	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → 𝑥 < ((♯‘𝑆) + (♯‘𝑇)))
41		elfzoelz 13316	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))) → 𝑥 ∈ ℤ)
42	41	zred 12355	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))) → 𝑥 ∈ ℝ)
43	42	adantl 481	. . . . . . . . . . . . . 14 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → 𝑥 ∈ ℝ)
44	2	nn0red 12224	. . . . . . . . . . . . . . 15 ⊢ (𝑆 ∈ Word 𝐵 → (♯‘𝑆) ∈ ℝ)
45	44	ad2antrr 722	. . . . . . . . . . . . . 14 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (♯‘𝑆) ∈ ℝ)
46	8	nn0red 12224	. . . . . . . . . . . . . . 15 ⊢ (𝑇 ∈ Word 𝐵 → (♯‘𝑇) ∈ ℝ)
47	46	ad2antlr 723	. . . . . . . . . . . . . 14 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (♯‘𝑇) ∈ ℝ)
48	43, 45, 47	ltsubadd2d 11503	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑥 − (♯‘𝑆)) < (♯‘𝑇) ↔ 𝑥 < ((♯‘𝑆) + (♯‘𝑇))))
49	40, 48	mpbird 256	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (𝑥 − (♯‘𝑆)) < (♯‘𝑇))
50		elfzo2 13319	. . . . . . . . . . . 12 ⊢ ((𝑥 − (♯‘𝑆)) ∈ (0..^(♯‘𝑇)) ↔ ((𝑥 − (♯‘𝑆)) ∈ (ℤ_≥‘0) ∧ (♯‘𝑇) ∈ ℤ ∧ (𝑥 − (♯‘𝑆)) < (♯‘𝑇)))
51	36, 38, 49, 50	syl3anbrc 1341	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (𝑥 − (♯‘𝑆)) ∈ (0..^(♯‘𝑇)))
52		fnfvelrn 6940	. . . . . . . . . . 11 ⊢ ((𝑇 Fn (0..^(♯‘𝑇)) ∧ (𝑥 − (♯‘𝑆)) ∈ (0..^(♯‘𝑇))) → (𝑇‘(𝑥 − (♯‘𝑆))) ∈ ran 𝑇)
53	31, 51, 52	syl2an2r 681	. . . . . . . . . 10 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (𝑇‘(𝑥 − (♯‘𝑆))) ∈ ran 𝑇)
54	29, 53	sselid 3915	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → (𝑇‘(𝑥 − (♯‘𝑆))) ∈ (ran 𝑆 ∪ ran 𝑇))
55	28, 54	eqeltrd 2839	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇))
56	26, 55	jaodan 954	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ (𝑥 ∈ (0..^(♯‘𝑆)) ∨ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇))))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇))
57	56	ex 412	. . . . . 6 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ((𝑥 ∈ (0..^(♯‘𝑆)) ∨ 𝑥 ∈ ((♯‘𝑆)..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇)))
58	17, 57	sylbid 239	. . . . 5 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇)))
59	58	ralrimiv 3106	. . . 4 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ∀𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇)))((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇))
60		ffnfv 6974	. . . 4 ⊢ ((𝑆 ++ 𝑇):(0..^((♯‘𝑆) + (♯‘𝑇)))⟶(ran 𝑆 ∪ ran 𝑇) ↔ ((𝑆 ++ 𝑇) Fn (0..^((♯‘𝑆) + (♯‘𝑇))) ∧ ∀𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇)))((𝑆 ++ 𝑇)‘𝑥) ∈ (ran 𝑆 ∪ ran 𝑇)))
61	1, 59, 60	sylanbrc 582	. . 3 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (𝑆 ++ 𝑇):(0..^((♯‘𝑆) + (♯‘𝑇)))⟶(ran 𝑆 ∪ ran 𝑇))
62	61	frnd 6592	. 2 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ran (𝑆 ++ 𝑇) ⊆ (ran 𝑆 ∪ ran 𝑇))
63		fzoss2 13343	. . . . . . . . . 10 ⊢ (((♯‘𝑆) + (♯‘𝑇)) ∈ (ℤ_≥‘(♯‘𝑆)) → (0..^(♯‘𝑆)) ⊆ (0..^((♯‘𝑆) + (♯‘𝑇))))
64	10, 63	syl 17	. . . . . . . . 9 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (0..^(♯‘𝑆)) ⊆ (0..^((♯‘𝑆) + (♯‘𝑇))))
65	64	sselda 3917	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → 𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇))))
66		fnfvelrn 6940	. . . . . . . 8 ⊢ (((𝑆 ++ 𝑇) Fn (0..^((♯‘𝑆) + (♯‘𝑇))) ∧ 𝑥 ∈ (0..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ ran (𝑆 ++ 𝑇))
67	1, 65, 66	syl2an2r 681	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → ((𝑆 ++ 𝑇)‘𝑥) ∈ ran (𝑆 ++ 𝑇))
68	19, 67	eqeltrrd 2840	. . . . . 6 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑆))) → (𝑆‘𝑥) ∈ ran (𝑆 ++ 𝑇))
69	68	ralrimiva 3107	. . . . 5 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ∀𝑥 ∈ (0..^(♯‘𝑆))(𝑆‘𝑥) ∈ ran (𝑆 ++ 𝑇))
70		ffnfv 6974	. . . . 5 ⊢ (𝑆:(0..^(♯‘𝑆))⟶ran (𝑆 ++ 𝑇) ↔ (𝑆 Fn (0..^(♯‘𝑆)) ∧ ∀𝑥 ∈ (0..^(♯‘𝑆))(𝑆‘𝑥) ∈ ran (𝑆 ++ 𝑇)))
71	22, 69, 70	sylanbrc 582	. . . 4 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → 𝑆:(0..^(♯‘𝑆))⟶ran (𝑆 ++ 𝑇))
72	71	frnd 6592	. . 3 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ran 𝑆 ⊆ ran (𝑆 ++ 𝑇))
73		ccatval3 14212	. . . . . . . 8 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵 ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → ((𝑆 ++ 𝑇)‘(𝑥 + (♯‘𝑆))) = (𝑇‘𝑥))
74	73	3expa 1116	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → ((𝑆 ++ 𝑇)‘(𝑥 + (♯‘𝑆))) = (𝑇‘𝑥))
75		elfzouz 13320	. . . . . . . . . 10 ⊢ (𝑥 ∈ (0..^(♯‘𝑇)) → 𝑥 ∈ (ℤ_≥‘0))
76	2	adantr 480	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (♯‘𝑆) ∈ ℕ₀)
77		uzaddcl 12573	. . . . . . . . . 10 ⊢ ((𝑥 ∈ (ℤ_≥‘0) ∧ (♯‘𝑆) ∈ ℕ₀) → (𝑥 + (♯‘𝑆)) ∈ (ℤ_≥‘0))
78	75, 76, 77	syl2anr 596	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (𝑥 + (♯‘𝑆)) ∈ (ℤ_≥‘0))
79		nn0addcl 12198	. . . . . . . . . . . 12 ⊢ (((♯‘𝑆) ∈ ℕ₀ ∧ (♯‘𝑇) ∈ ℕ₀) → ((♯‘𝑆) + (♯‘𝑇)) ∈ ℕ₀)
80	2, 8, 79	syl2an 595	. . . . . . . . . . 11 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ((♯‘𝑆) + (♯‘𝑇)) ∈ ℕ₀)
81	80	nn0zd 12353	. . . . . . . . . 10 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ((♯‘𝑆) + (♯‘𝑇)) ∈ ℤ)
82	81	adantr 480	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → ((♯‘𝑆) + (♯‘𝑇)) ∈ ℤ)
83		elfzonn0 13360	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ (0..^(♯‘𝑇)) → 𝑥 ∈ ℕ₀)
84	83	nn0cnd 12225	. . . . . . . . . . 11 ⊢ (𝑥 ∈ (0..^(♯‘𝑇)) → 𝑥 ∈ ℂ)
85	2	nn0cnd 12225	. . . . . . . . . . . 12 ⊢ (𝑆 ∈ Word 𝐵 → (♯‘𝑆) ∈ ℂ)
86	85	adantr 480	. . . . . . . . . . 11 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (♯‘𝑆) ∈ ℂ)
87		addcom 11091	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℂ ∧ (♯‘𝑆) ∈ ℂ) → (𝑥 + (♯‘𝑆)) = ((♯‘𝑆) + 𝑥))
88	84, 86, 87	syl2anr 596	. . . . . . . . . 10 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (𝑥 + (♯‘𝑆)) = ((♯‘𝑆) + 𝑥))
89	83	nn0red 12224	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ (0..^(♯‘𝑇)) → 𝑥 ∈ ℝ)
90	89	adantl 481	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → 𝑥 ∈ ℝ)
91	46	ad2antlr 723	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (♯‘𝑇) ∈ ℝ)
92	44	ad2antrr 722	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (♯‘𝑆) ∈ ℝ)
93		elfzolt2 13325	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ (0..^(♯‘𝑇)) → 𝑥 < (♯‘𝑇))
94	93	adantl 481	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → 𝑥 < (♯‘𝑇))
95	90, 91, 92, 94	ltadd2dd 11064	. . . . . . . . . 10 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → ((♯‘𝑆) + 𝑥) < ((♯‘𝑆) + (♯‘𝑇)))
96	88, 95	eqbrtrd 5092	. . . . . . . . 9 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (𝑥 + (♯‘𝑆)) < ((♯‘𝑆) + (♯‘𝑇)))
97		elfzo2 13319	. . . . . . . . 9 ⊢ ((𝑥 + (♯‘𝑆)) ∈ (0..^((♯‘𝑆) + (♯‘𝑇))) ↔ ((𝑥 + (♯‘𝑆)) ∈ (ℤ_≥‘0) ∧ ((♯‘𝑆) + (♯‘𝑇)) ∈ ℤ ∧ (𝑥 + (♯‘𝑆)) < ((♯‘𝑆) + (♯‘𝑇))))
98	78, 82, 96, 97	syl3anbrc 1341	. . . . . . . 8 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (𝑥 + (♯‘𝑆)) ∈ (0..^((♯‘𝑆) + (♯‘𝑇))))
99		fnfvelrn 6940	. . . . . . . 8 ⊢ (((𝑆 ++ 𝑇) Fn (0..^((♯‘𝑆) + (♯‘𝑇))) ∧ (𝑥 + (♯‘𝑆)) ∈ (0..^((♯‘𝑆) + (♯‘𝑇)))) → ((𝑆 ++ 𝑇)‘(𝑥 + (♯‘𝑆))) ∈ ran (𝑆 ++ 𝑇))
100	1, 98, 99	syl2an2r 681	. . . . . . 7 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → ((𝑆 ++ 𝑇)‘(𝑥 + (♯‘𝑆))) ∈ ran (𝑆 ++ 𝑇))
101	74, 100	eqeltrrd 2840	. . . . . 6 ⊢ (((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) ∧ 𝑥 ∈ (0..^(♯‘𝑇))) → (𝑇‘𝑥) ∈ ran (𝑆 ++ 𝑇))
102	101	ralrimiva 3107	. . . . 5 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ∀𝑥 ∈ (0..^(♯‘𝑇))(𝑇‘𝑥) ∈ ran (𝑆 ++ 𝑇))
103		ffnfv 6974	. . . . 5 ⊢ (𝑇:(0..^(♯‘𝑇))⟶ran (𝑆 ++ 𝑇) ↔ (𝑇 Fn (0..^(♯‘𝑇)) ∧ ∀𝑥 ∈ (0..^(♯‘𝑇))(𝑇‘𝑥) ∈ ran (𝑆 ++ 𝑇)))
104	31, 102, 103	sylanbrc 582	. . . 4 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → 𝑇:(0..^(♯‘𝑇))⟶ran (𝑆 ++ 𝑇))
105	104	frnd 6592	. . 3 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ran 𝑇 ⊆ ran (𝑆 ++ 𝑇))
106	72, 105	unssd 4116	. 2 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → (ran 𝑆 ∪ ran 𝑇) ⊆ ran (𝑆 ++ 𝑇))
107	62, 106	eqssd 3934	1 ⊢ ((𝑆 ∈ Word 𝐵 ∧ 𝑇 ∈ Word 𝐵) → ran (𝑆 ++ 𝑇) = (ran 𝑆 ∪ ran 𝑇))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∨ wo 843 = wceq 1539 ∈ wcel 2108 ∀wral 3063 ∪ cun 3881 ⊆ wss 3883 class class class wbr 5070 ran crn 5581 Fn wfn 6413 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 ℝcr 10801 0cc0 10802 + caddc 10805 < clt 10940 − cmin 11135 ℕ₀cn0 12163 ℤcz 12249 ℤ_≥cuz 12511 ...cfz 13168 ..^cfzo 13311 ♯chash 13972 Word cword 14145 ++ cconcat 14201

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879

This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 df-fzo 13312 df-hash 13973 df-word 14146 df-concat 14202

This theorem is referenced by: cycpmco2f1 31293 cycpmco2rn 31294 mrsubvrs 33384

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