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| Mirrors > Home > MPE Home > Th. List > hashss | Structured version Visualization version GIF version | ||
| Description: The size of a subset is less than or equal to the size of its superset. (Contributed by Alexander van der Vekens, 14-Jul-2018.) |
| Ref | Expression |
|---|---|
| hashss | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (♯‘𝐵) ≤ (♯‘𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssdomg 8937 | . . . . . . 7 ⊢ (𝐴 ∈ Fin → (𝐵 ⊆ 𝐴 → 𝐵 ≼ 𝐴)) | |
| 2 | 1 | com12 32 | . . . . . 6 ⊢ (𝐵 ⊆ 𝐴 → (𝐴 ∈ Fin → 𝐵 ≼ 𝐴)) |
| 3 | 2 | adantl 482 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (𝐴 ∈ Fin → 𝐵 ≼ 𝐴)) |
| 4 | 3 | impcom 408 | . . . 4 ⊢ ((𝐴 ∈ Fin ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴)) → 𝐵 ≼ 𝐴) |
| 5 | ssfi 9097 | . . . . . 6 ⊢ ((𝐴 ∈ Fin ∧ 𝐵 ⊆ 𝐴) → 𝐵 ∈ Fin) | |
| 6 | 5 | adantrl 722 | . . . . 5 ⊢ ((𝐴 ∈ Fin ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴)) → 𝐵 ∈ Fin) |
| 7 | simpl 483 | . . . . 5 ⊢ ((𝐴 ∈ Fin ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴)) → 𝐴 ∈ Fin) | |
| 8 | hashdom 14332 | . . . . 5 ⊢ ((𝐵 ∈ Fin ∧ 𝐴 ∈ Fin) → ((♯‘𝐵) ≤ (♯‘𝐴) ↔ 𝐵 ≼ 𝐴)) | |
| 9 | 6, 7, 8 | syl2anc 590 | . . . 4 ⊢ ((𝐴 ∈ Fin ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴)) → ((♯‘𝐵) ≤ (♯‘𝐴) ↔ 𝐵 ≼ 𝐴)) |
| 10 | 4, 9 | mpbird 258 | . . 3 ⊢ ((𝐴 ∈ Fin ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴)) → (♯‘𝐵) ≤ (♯‘𝐴)) |
| 11 | 10 | ex 413 | . 2 ⊢ (𝐴 ∈ Fin → ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (♯‘𝐵) ≤ (♯‘𝐴))) |
| 12 | hashinf 14288 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ ¬ 𝐴 ∈ Fin) → (♯‘𝐴) = +∞) | |
| 13 | ssexg 5251 | . . . . . . . . . . . 12 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝐴 ∈ 𝑉) → 𝐵 ∈ V) | |
| 14 | 13 | ancoms 459 | . . . . . . . . . . 11 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → 𝐵 ∈ V) |
| 15 | hashxrcl 14310 | . . . . . . . . . . 11 ⊢ (𝐵 ∈ V → (♯‘𝐵) ∈ ℝ*) | |
| 16 | pnfge 13072 | . . . . . . . . . . 11 ⊢ ((♯‘𝐵) ∈ ℝ* → (♯‘𝐵) ≤ +∞) | |
| 17 | 14, 15, 16 | 3syl 18 | . . . . . . . . . 10 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (♯‘𝐵) ≤ +∞) |
| 18 | 17 | ex 413 | . . . . . . . . 9 ⊢ (𝐴 ∈ 𝑉 → (𝐵 ⊆ 𝐴 → (♯‘𝐵) ≤ +∞)) |
| 19 | 18 | adantl 482 | . . . . . . . 8 ⊢ (((♯‘𝐴) = +∞ ∧ 𝐴 ∈ 𝑉) → (𝐵 ⊆ 𝐴 → (♯‘𝐵) ≤ +∞)) |
| 20 | breq2 5076 | . . . . . . . . 9 ⊢ ((♯‘𝐴) = +∞ → ((♯‘𝐵) ≤ (♯‘𝐴) ↔ (♯‘𝐵) ≤ +∞)) | |
| 21 | 20 | adantr 481 | . . . . . . . 8 ⊢ (((♯‘𝐴) = +∞ ∧ 𝐴 ∈ 𝑉) → ((♯‘𝐵) ≤ (♯‘𝐴) ↔ (♯‘𝐵) ≤ +∞)) |
| 22 | 19, 21 | sylibrd 260 | . . . . . . 7 ⊢ (((♯‘𝐴) = +∞ ∧ 𝐴 ∈ 𝑉) → (𝐵 ⊆ 𝐴 → (♯‘𝐵) ≤ (♯‘𝐴))) |
| 23 | 22 | expcom 414 | . . . . . 6 ⊢ (𝐴 ∈ 𝑉 → ((♯‘𝐴) = +∞ → (𝐵 ⊆ 𝐴 → (♯‘𝐵) ≤ (♯‘𝐴)))) |
| 24 | 23 | adantr 481 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ ¬ 𝐴 ∈ Fin) → ((♯‘𝐴) = +∞ → (𝐵 ⊆ 𝐴 → (♯‘𝐵) ≤ (♯‘𝐴)))) |
| 25 | 12, 24 | mpd 15 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ ¬ 𝐴 ∈ Fin) → (𝐵 ⊆ 𝐴 → (♯‘𝐵) ≤ (♯‘𝐴))) |
| 26 | 25 | impancom 452 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (¬ 𝐴 ∈ Fin → (♯‘𝐵) ≤ (♯‘𝐴))) |
| 27 | 26 | com12 32 | . 2 ⊢ (¬ 𝐴 ∈ Fin → ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (♯‘𝐵) ≤ (♯‘𝐴))) |
| 28 | 11, 27 | pm2.61i 183 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ⊆ 𝐴) → (♯‘𝐵) ≤ (♯‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 207 ∧ wa 396 = wceq 1547 ∈ wcel 2119 Vcvv 3431 ⊆ wss 3883 class class class wbr 5072 ‘cfv 6485 ≼ cdom 8881 Fincfn 8883 +∞cpnf 11167 ℝ*cxr 11169 ≤ cle 11171 ♯chash 14283 |
| 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 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-int 4878 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-oadd 8399 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-card 9854 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-n0 12429 df-xnn0 12502 df-z 12516 df-uz 12780 df-fz 13453 df-hash 14284 |
| This theorem is referenced by: prsshashgt1 14363 hashin 14364 hashf1dmcdm 14397 nehash2 14427 isnzr2hash 20491 nbfusgrlevtxm1 29464 nbfusgrlevtxm2 29465 konigsberglem5 30344 hashpss 32901 cycpmconjslem2 33236 esplyfval2 33749 esplyfval3 33756 lbslelsp 33782 lssdimle 33792 extdgfialglem1 33876 poimirlem9 37996 aks6d1c4 42609 aks6d1c2lem4 42612 aks6d1c6lem2 42656 aks6d1c6lem3 42657 unitscyglem1 42680 unitscyglem5 42684 hashssle 45746 fourierdlem102 46651 fourierdlem114 46663 clnbgrlevtx 48336 |
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