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| Mirrors > Home > MPE Home > Th. List > chnpolleha | Structured version Visualization version GIF version | ||
| Description: A chain under relation which orders the alphabet has at most alphabet's size elements in it. (Contributed by Ender Ting, 20-Jan-2026.) |
| Ref | Expression |
|---|---|
| chnpoadomd.1 | ⊢ (𝜑 → < Po 𝐴) |
| chnpoadomd.2 | ⊢ (𝜑 → 𝐵 ∈ ( < Chain 𝐴)) |
| chnpoadomd.3 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| chnpolleha | ⊢ (𝜑 → (♯‘𝐵) ≤ (♯‘𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | chnpoadomd.2 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ ( < Chain 𝐴)) | |
| 2 | 1 | chnwrd 18506 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ Word 𝐴) |
| 3 | lencl 14432 | . . . 4 ⊢ (𝐵 ∈ Word 𝐴 → (♯‘𝐵) ∈ ℕ0) | |
| 4 | 2, 3 | syl 17 | . . 3 ⊢ (𝜑 → (♯‘𝐵) ∈ ℕ0) |
| 5 | hashfzo0 14329 | . . . 4 ⊢ ((♯‘𝐵) ∈ ℕ0 → (♯‘(0..^(♯‘𝐵))) = (♯‘𝐵)) | |
| 6 | 5 | eqcomd 2736 | . . 3 ⊢ ((♯‘𝐵) ∈ ℕ0 → (♯‘𝐵) = (♯‘(0..^(♯‘𝐵)))) |
| 7 | 4, 6 | syl 17 | . 2 ⊢ (𝜑 → (♯‘𝐵) = (♯‘(0..^(♯‘𝐵)))) |
| 8 | chnpoadomd.3 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 9 | chnpoadomd.1 | . . . 4 ⊢ (𝜑 → < Po 𝐴) | |
| 10 | 9, 1 | chnpof1 18528 | . . 3 ⊢ (𝜑 → 𝐵:(0..^(♯‘𝐵))–1-1→𝐴) |
| 11 | hashf1dmcdm 14343 | . . 3 ⊢ ((𝐵 ∈ ( < Chain 𝐴) ∧ 𝐴 ∈ 𝑉 ∧ 𝐵:(0..^(♯‘𝐵))–1-1→𝐴) → (♯‘(0..^(♯‘𝐵))) ≤ (♯‘𝐴)) | |
| 12 | 1, 8, 10, 11 | syl3anc 1373 | . 2 ⊢ (𝜑 → (♯‘(0..^(♯‘𝐵))) ≤ (♯‘𝐴)) |
| 13 | 7, 12 | eqbrtrd 5111 | 1 ⊢ (𝜑 → (♯‘𝐵) ≤ (♯‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2110 class class class wbr 5089 Po wpo 5520 –1-1→wf1 6474 ‘cfv 6477 (class class class)co 7341 0cc0 10998 ≤ cle 11139 ℕ0cn0 12373 ..^cfzo 13546 ♯chash 14229 Word cword 14412 Chain cchn 18503 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2112 ax-9 2120 ax-10 2143 ax-11 2159 ax-12 2179 ax-ext 2702 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7663 ax-cnex 11054 ax-resscn 11055 ax-1cn 11056 ax-icn 11057 ax-addcl 11058 ax-addrcl 11059 ax-mulcl 11060 ax-mulrcl 11061 ax-mulcom 11062 ax-addass 11063 ax-mulass 11064 ax-distr 11065 ax-i2m1 11066 ax-1ne0 11067 ax-1rid 11068 ax-rnegex 11069 ax-rrecex 11070 ax-cnre 11071 ax-pre-lttri 11072 ax-pre-lttrn 11073 ax-pre-ltadd 11074 ax-pre-mulgt0 11075 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-reu 3345 df-rab 3394 df-v 3436 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-pss 3920 df-nul 4282 df-if 4474 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4858 df-int 4896 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6244 df-ord 6305 df-on 6306 df-lim 6307 df-suc 6308 df-iota 6433 df-fun 6479 df-fn 6480 df-f 6481 df-f1 6482 df-fo 6483 df-f1o 6484 df-fv 6485 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-om 7792 df-1st 7916 df-2nd 7917 df-frecs 8206 df-wrecs 8237 df-recs 8286 df-rdg 8324 df-1o 8380 df-2o 8381 df-oadd 8384 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-fin 8868 df-dju 9786 df-card 9824 df-pnf 11140 df-mnf 11141 df-xr 11142 df-ltxr 11143 df-le 11144 df-sub 11338 df-neg 11339 df-nn 12118 df-2 12180 df-n0 12374 df-xnn0 12447 df-z 12461 df-uz 12725 df-rp 12883 df-fz 13400 df-fzo 13547 df-hash 14230 df-word 14413 df-lsw 14462 df-concat 14470 df-s1 14496 df-substr 14541 df-pfx 14571 df-chn 18504 |
| This theorem is referenced by: chnpolfz 18531 |
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