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Mirrors > Home > MPE Home > Th. List > znhash | Structured version Visualization version GIF version |
Description: The ℤ/nℤ structure has 𝑛 elements. (Contributed by Mario Carneiro, 15-Jun-2015.) |
Ref | Expression |
---|---|
zntos.y | ⊢ 𝑌 = (ℤ/nℤ‘𝑁) |
znhash.1 | ⊢ 𝐵 = (Base‘𝑌) |
Ref | Expression |
---|---|
znhash | ⊢ (𝑁 ∈ ℕ → (♯‘𝐵) = 𝑁) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnnn0 11983 | . . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ0) | |
2 | zntos.y | . . . . . 6 ⊢ 𝑌 = (ℤ/nℤ‘𝑁) | |
3 | znhash.1 | . . . . . 6 ⊢ 𝐵 = (Base‘𝑌) | |
4 | eqid 2738 | . . . . . 6 ⊢ ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))) = ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))) | |
5 | eqid 2738 | . . . . . 6 ⊢ if(𝑁 = 0, ℤ, (0..^𝑁)) = if(𝑁 = 0, ℤ, (0..^𝑁)) | |
6 | 2, 3, 4, 5 | znf1o 20370 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):if(𝑁 = 0, ℤ, (0..^𝑁))–1-1-onto→𝐵) |
7 | 1, 6 | syl 17 | . . . 4 ⊢ (𝑁 ∈ ℕ → ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):if(𝑁 = 0, ℤ, (0..^𝑁))–1-1-onto→𝐵) |
8 | nnne0 11750 | . . . . 5 ⊢ (𝑁 ∈ ℕ → 𝑁 ≠ 0) | |
9 | ifnefalse 4426 | . . . . 5 ⊢ (𝑁 ≠ 0 → if(𝑁 = 0, ℤ, (0..^𝑁)) = (0..^𝑁)) | |
10 | f1oeq2 6607 | . . . . 5 ⊢ (if(𝑁 = 0, ℤ, (0..^𝑁)) = (0..^𝑁) → (((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):if(𝑁 = 0, ℤ, (0..^𝑁))–1-1-onto→𝐵 ↔ ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):(0..^𝑁)–1-1-onto→𝐵)) | |
11 | 8, 9, 10 | 3syl 18 | . . . 4 ⊢ (𝑁 ∈ ℕ → (((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):if(𝑁 = 0, ℤ, (0..^𝑁))–1-1-onto→𝐵 ↔ ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):(0..^𝑁)–1-1-onto→𝐵)) |
12 | 7, 11 | mpbid 235 | . . 3 ⊢ (𝑁 ∈ ℕ → ((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):(0..^𝑁)–1-1-onto→𝐵) |
13 | ovex 7203 | . . . 4 ⊢ (0..^𝑁) ∈ V | |
14 | 13 | f1oen 8576 | . . 3 ⊢ (((ℤRHom‘𝑌) ↾ if(𝑁 = 0, ℤ, (0..^𝑁))):(0..^𝑁)–1-1-onto→𝐵 → (0..^𝑁) ≈ 𝐵) |
15 | ensym 8604 | . . 3 ⊢ ((0..^𝑁) ≈ 𝐵 → 𝐵 ≈ (0..^𝑁)) | |
16 | hasheni 13800 | . . 3 ⊢ (𝐵 ≈ (0..^𝑁) → (♯‘𝐵) = (♯‘(0..^𝑁))) | |
17 | 12, 14, 15, 16 | 4syl 19 | . 2 ⊢ (𝑁 ∈ ℕ → (♯‘𝐵) = (♯‘(0..^𝑁))) |
18 | hashfzo0 13883 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (♯‘(0..^𝑁)) = 𝑁) | |
19 | 1, 18 | syl 17 | . 2 ⊢ (𝑁 ∈ ℕ → (♯‘(0..^𝑁)) = 𝑁) |
20 | 17, 19 | eqtrd 2773 | 1 ⊢ (𝑁 ∈ ℕ → (♯‘𝐵) = 𝑁) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 = wceq 1542 ∈ wcel 2114 ≠ wne 2934 ifcif 4414 class class class wbr 5030 ↾ cres 5527 –1-1-onto→wf1o 6338 ‘cfv 6339 (class class class)co 7170 ≈ cen 8552 0cc0 10615 ℕcn 11716 ℕ0cn0 11976 ℤcz 12062 ..^cfzo 13124 ♯chash 13782 Basecbs 16586 ℤRHomczrh 20320 ℤ/nℤczn 20323 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2710 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5232 ax-pr 5296 ax-un 7479 ax-cnex 10671 ax-resscn 10672 ax-1cn 10673 ax-icn 10674 ax-addcl 10675 ax-addrcl 10676 ax-mulcl 10677 ax-mulrcl 10678 ax-mulcom 10679 ax-addass 10680 ax-mulass 10681 ax-distr 10682 ax-i2m1 10683 ax-1ne0 10684 ax-1rid 10685 ax-rnegex 10686 ax-rrecex 10687 ax-cnre 10688 ax-pre-lttri 10689 ax-pre-lttrn 10690 ax-pre-ltadd 10691 ax-pre-mulgt0 10692 ax-pre-sup 10693 ax-addf 10694 ax-mulf 10695 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rmo 3061 df-rab 3062 df-v 3400 df-sbc 3681 df-csb 3791 df-dif 3846 df-un 3848 df-in 3850 df-ss 3860 df-pss 3862 df-nul 4212 df-if 4415 df-pw 4490 df-sn 4517 df-pr 4519 df-tp 4521 df-op 4523 df-uni 4797 df-int 4837 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5429 df-eprel 5434 df-po 5442 df-so 5443 df-fr 5483 df-we 5485 df-xp 5531 df-rel 5532 df-cnv 5533 df-co 5534 df-dm 5535 df-rn 5536 df-res 5537 df-ima 5538 df-pred 6129 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-iota 6297 df-fun 6341 df-fn 6342 df-f 6343 df-f1 6344 df-fo 6345 df-f1o 6346 df-fv 6347 df-riota 7127 df-ov 7173 df-oprab 7174 df-mpo 7175 df-om 7600 df-1st 7714 df-2nd 7715 df-tpos 7921 df-wrecs 7976 df-recs 8037 df-rdg 8075 df-1o 8131 df-er 8320 df-ec 8322 df-qs 8326 df-map 8439 df-en 8556 df-dom 8557 df-sdom 8558 df-fin 8559 df-sup 8979 df-inf 8980 df-card 9441 df-pnf 10755 df-mnf 10756 df-xr 10757 df-ltxr 10758 df-le 10759 df-sub 10950 df-neg 10951 df-div 11376 df-nn 11717 df-2 11779 df-3 11780 df-4 11781 df-5 11782 df-6 11783 df-7 11784 df-8 11785 df-9 11786 df-n0 11977 df-z 12063 df-dec 12180 df-uz 12325 df-rp 12473 df-fz 12982 df-fzo 13125 df-fl 13253 df-mod 13329 df-seq 13461 df-hash 13783 df-dvds 15700 df-struct 16588 df-ndx 16589 df-slot 16590 df-base 16592 df-sets 16593 df-ress 16594 df-plusg 16681 df-mulr 16682 df-starv 16683 df-sca 16684 df-vsca 16685 df-ip 16686 df-tset 16687 df-ple 16688 df-ds 16690 df-unif 16691 df-0g 16818 df-imas 16884 df-qus 16885 df-mgm 17968 df-sgrp 18017 df-mnd 18028 df-mhm 18072 df-grp 18222 df-minusg 18223 df-sbg 18224 df-mulg 18343 df-subg 18394 df-nsg 18395 df-eqg 18396 df-ghm 18474 df-cmn 19026 df-abl 19027 df-mgp 19359 df-ur 19371 df-ring 19418 df-cring 19419 df-oppr 19495 df-dvdsr 19513 df-rnghom 19589 df-subrg 19652 df-lmod 19755 df-lss 19823 df-lsp 19863 df-sra 20063 df-rgmod 20064 df-lidl 20065 df-rsp 20066 df-2idl 20124 df-cnfld 20218 df-zring 20290 df-zrh 20324 df-zn 20327 |
This theorem is referenced by: znfi 20378 znfld 20379 znidomb 20380 frlmpwfi 40495 isnumbasgrplem3 40502 cznnring 45048 |
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