cshwshashnsame - Metamath Proof Explorer

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Theorem cshwshashnsame 17036

Description: If a word (not consisting of identical symbols) has a length being a prime number, the size of the set of (different!) words resulting by cyclically shifting the original word equals the length of the original word. (Contributed by AV, 19-May-2018.) (Revised by AV, 10-Nov-2018.)

**Hypothesis**
Ref	Expression
cshwrepswhash1.m	⊢ 𝑀 = {𝑤 ∈ Word 𝑉 ∣ ∃𝑛 ∈ (0..^(♯‘𝑊))(𝑊 cyclShift 𝑛) = 𝑤}

**Assertion**
Ref	Expression
cshwshashnsame	⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → (∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0) → (♯‘𝑀) = (♯‘𝑊)))

Distinct variable groups: 𝑛,𝑉,𝑤 𝑛,𝑊,𝑤,𝑖 𝑖,𝑉 Allowed substitution hints: 𝑀(𝑤,𝑖,𝑛)

**Proof of Theorem cshwshashnsame**
Step	Hyp	Ref	Expression
1		cshwrepswhash1.m	. . . . . 6 ⊢ 𝑀 = {𝑤 ∈ Word 𝑉 ∣ ∃𝑛 ∈ (0..^(♯‘𝑊))(𝑊 cyclShift 𝑛) = 𝑤}
2	1	cshwsiun 17032	. . . . 5 ⊢ (𝑊 ∈ Word 𝑉 → 𝑀 = ∪ 𝑛 ∈ (0..^(♯‘𝑊)){(𝑊 cyclShift 𝑛)})
3	2	ad2antrr 724	. . . 4 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → 𝑀 = ∪ 𝑛 ∈ (0..^(♯‘𝑊)){(𝑊 cyclShift 𝑛)})
4	3	fveq2d 6895	. . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → (♯‘𝑀) = (♯‘∪ 𝑛 ∈ (0..^(♯‘𝑊)){(𝑊 cyclShift 𝑛)}))
5		fzofi 13938	. . . . 5 ⊢ (0..^(♯‘𝑊)) ∈ Fin
6	5	a1i 11	. . . 4 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → (0..^(♯‘𝑊)) ∈ Fin)
7		snfi 9043	. . . . 5 ⊢ {(𝑊 cyclShift 𝑛)} ∈ Fin
8	7	a1i 11	. . . 4 ⊢ ((((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) ∧ 𝑛 ∈ (0..^(♯‘𝑊))) → {(𝑊 cyclShift 𝑛)} ∈ Fin)
9		id 22	. . . . 5 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → (𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ))
10	9	cshwsdisj 17031	. . . 4 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → Disj 𝑛 ∈ (0..^(♯‘𝑊)){(𝑊 cyclShift 𝑛)})
11	6, 8, 10	hashiun 15767	. . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → (♯‘∪ 𝑛 ∈ (0..^(♯‘𝑊)){(𝑊 cyclShift 𝑛)}) = Σ𝑛 ∈ (0..^(♯‘𝑊))(♯‘{(𝑊 cyclShift 𝑛)}))
12		ovex 7441	. . . . . 6 ⊢ (𝑊 cyclShift 𝑛) ∈ V
13		hashsng 14328	. . . . . 6 ⊢ ((𝑊 cyclShift 𝑛) ∈ V → (♯‘{(𝑊 cyclShift 𝑛)}) = 1)
14	12, 13	mp1i 13	. . . . 5 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → (♯‘{(𝑊 cyclShift 𝑛)}) = 1)
15	14	sumeq2sdv 15649	. . . 4 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → Σ𝑛 ∈ (0..^(♯‘𝑊))(♯‘{(𝑊 cyclShift 𝑛)}) = Σ𝑛 ∈ (0..^(♯‘𝑊))1)
16		1cnd 11208	. . . . . . 7 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → 1 ∈ ℂ)
17		fsumconst 15735	. . . . . . 7 ⊢ (((0..^(♯‘𝑊)) ∈ Fin ∧ 1 ∈ ℂ) → Σ𝑛 ∈ (0..^(♯‘𝑊))1 = ((♯‘(0..^(♯‘𝑊))) · 1))
18	5, 16, 17	sylancr 587	. . . . . 6 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → Σ𝑛 ∈ (0..^(♯‘𝑊))1 = ((♯‘(0..^(♯‘𝑊))) · 1))
19		lencl 14482	. . . . . . . . 9 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘𝑊) ∈ ℕ₀)
20	19	adantr 481	. . . . . . . 8 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → (♯‘𝑊) ∈ ℕ₀)
21		hashfzo0 14389	. . . . . . . 8 ⊢ ((♯‘𝑊) ∈ ℕ₀ → (♯‘(0..^(♯‘𝑊))) = (♯‘𝑊))
22	20, 21	syl 17	. . . . . . 7 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → (♯‘(0..^(♯‘𝑊))) = (♯‘𝑊))
23	22	oveq1d 7423	. . . . . 6 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → ((♯‘(0..^(♯‘𝑊))) · 1) = ((♯‘𝑊) · 1))
24		prmnn 16610	. . . . . . . . 9 ⊢ ((♯‘𝑊) ∈ ℙ → (♯‘𝑊) ∈ ℕ)
25	24	nnred 12226	. . . . . . . 8 ⊢ ((♯‘𝑊) ∈ ℙ → (♯‘𝑊) ∈ ℝ)
26	25	adantl 482	. . . . . . 7 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → (♯‘𝑊) ∈ ℝ)
27		ax-1rid 11179	. . . . . . 7 ⊢ ((♯‘𝑊) ∈ ℝ → ((♯‘𝑊) · 1) = (♯‘𝑊))
28	26, 27	syl 17	. . . . . 6 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → ((♯‘𝑊) · 1) = (♯‘𝑊))
29	18, 23, 28	3eqtrd 2776	. . . . 5 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → Σ𝑛 ∈ (0..^(♯‘𝑊))1 = (♯‘𝑊))
30	29	adantr 481	. . . 4 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → Σ𝑛 ∈ (0..^(♯‘𝑊))1 = (♯‘𝑊))
31	15, 30	eqtrd 2772	. . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → Σ𝑛 ∈ (0..^(♯‘𝑊))(♯‘{(𝑊 cyclShift 𝑛)}) = (♯‘𝑊))
32	4, 11, 31	3eqtrd 2776	. 2 ⊢ (((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) ∧ ∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0)) → (♯‘𝑀) = (♯‘𝑊))
33	32	ex 413	1 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (♯‘𝑊) ∈ ℙ) → (∃𝑖 ∈ (0..^(♯‘𝑊))(𝑊‘𝑖) ≠ (𝑊‘0) → (♯‘𝑀) = (♯‘𝑊)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∃wrex 3070 {crab 3432 Vcvv 3474 {csn 4628 ∪ ciun 4997 ‘cfv 6543 (class class class)co 7408 Fincfn 8938 ℂcc 11107 ℝcr 11108 0cc0 11109 1c1 11110 · cmul 11114 ℕ₀cn0 12471 ..^cfzo 13626 ♯chash 14289 Word cword 14463 cyclShift ccsh 14737 Σcsu 15631 ℙcprime 16607

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-inf2 9635 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-disj 5114 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-se 5632 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-1st 7974 df-2nd 7975 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-1o 8465 df-2o 8466 df-oadd 8469 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-sup 9436 df-inf 9437 df-oi 9504 df-dju 9895 df-card 9933 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-3 12275 df-n0 12472 df-xnn0 12544 df-z 12558 df-uz 12822 df-rp 12974 df-fz 13484 df-fzo 13627 df-fl 13756 df-mod 13834 df-seq 13966 df-exp 14027 df-hash 14290 df-word 14464 df-concat 14520 df-substr 14590 df-pfx 14620 df-reps 14718 df-csh 14738 df-cj 15045 df-re 15046 df-im 15047 df-sqrt 15181 df-abs 15182 df-clim 15431 df-sum 15632 df-dvds 16197 df-gcd 16435 df-prm 16608 df-phi 16698

This theorem is referenced by: cshwshash 17037 umgrhashecclwwlk 29328

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