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Mirrors > Home > MPE Home > Th. List > sizusglecusg | Structured version Visualization version GIF version |
Description: The size of a simple graph with 𝑛 vertices is at most the size of a complete simple graph with 𝑛 vertices (𝑛 may be infinite). (Contributed by Alexander van der Vekens, 13-Jan-2018.) (Revised by AV, 13-Nov-2020.) |
Ref | Expression |
---|---|
fusgrmaxsize.v | ⊢ 𝑉 = (Vtx‘𝐺) |
fusgrmaxsize.e | ⊢ 𝐸 = (Edg‘𝐺) |
usgrsscusgra.h | ⊢ 𝑉 = (Vtx‘𝐻) |
usgrsscusgra.f | ⊢ 𝐹 = (Edg‘𝐻) |
Ref | Expression |
---|---|
sizusglecusg | ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (♯‘𝐸) ≤ (♯‘𝐹)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fusgrmaxsize.e | . . . . . . . . 9 ⊢ 𝐸 = (Edg‘𝐺) | |
2 | 1 | fvexi 6785 | . . . . . . . 8 ⊢ 𝐸 ∈ V |
3 | resiexg 7755 | . . . . . . . 8 ⊢ (𝐸 ∈ V → ( I ↾ 𝐸) ∈ V) | |
4 | 2, 3 | mp1i 13 | . . . . . . 7 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → ( I ↾ 𝐸) ∈ V) |
5 | fusgrmaxsize.v | . . . . . . . 8 ⊢ 𝑉 = (Vtx‘𝐺) | |
6 | usgrsscusgra.h | . . . . . . . 8 ⊢ 𝑉 = (Vtx‘𝐻) | |
7 | usgrsscusgra.f | . . . . . . . 8 ⊢ 𝐹 = (Edg‘𝐻) | |
8 | 5, 1, 6, 7 | sizusglecusglem1 27826 | . . . . . . 7 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → ( I ↾ 𝐸):𝐸–1-1→𝐹) |
9 | f1eq1 6663 | . . . . . . 7 ⊢ (𝑓 = ( I ↾ 𝐸) → (𝑓:𝐸–1-1→𝐹 ↔ ( I ↾ 𝐸):𝐸–1-1→𝐹)) | |
10 | 4, 8, 9 | spcedv 3536 | . . . . . 6 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → ∃𝑓 𝑓:𝐸–1-1→𝐹) |
11 | 10 | adantl 482 | . . . . 5 ⊢ (((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) ∧ (𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph)) → ∃𝑓 𝑓:𝐸–1-1→𝐹) |
12 | hashdom 14092 | . . . . . . 7 ⊢ ((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) → ((♯‘𝐸) ≤ (♯‘𝐹) ↔ 𝐸 ≼ 𝐹)) | |
13 | 12 | adantr 481 | . . . . . 6 ⊢ (((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) ∧ (𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph)) → ((♯‘𝐸) ≤ (♯‘𝐹) ↔ 𝐸 ≼ 𝐹)) |
14 | brdomg 8729 | . . . . . . . 8 ⊢ (𝐹 ∈ Fin → (𝐸 ≼ 𝐹 ↔ ∃𝑓 𝑓:𝐸–1-1→𝐹)) | |
15 | 14 | adantl 482 | . . . . . . 7 ⊢ ((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) → (𝐸 ≼ 𝐹 ↔ ∃𝑓 𝑓:𝐸–1-1→𝐹)) |
16 | 15 | adantr 481 | . . . . . 6 ⊢ (((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) ∧ (𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph)) → (𝐸 ≼ 𝐹 ↔ ∃𝑓 𝑓:𝐸–1-1→𝐹)) |
17 | 13, 16 | bitrd 278 | . . . . 5 ⊢ (((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) ∧ (𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph)) → ((♯‘𝐸) ≤ (♯‘𝐹) ↔ ∃𝑓 𝑓:𝐸–1-1→𝐹)) |
18 | 11, 17 | mpbird 256 | . . . 4 ⊢ (((𝐸 ∈ Fin ∧ 𝐹 ∈ Fin) ∧ (𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph)) → (♯‘𝐸) ≤ (♯‘𝐹)) |
19 | 18 | exp31 420 | . . 3 ⊢ (𝐸 ∈ Fin → (𝐹 ∈ Fin → ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (♯‘𝐸) ≤ (♯‘𝐹)))) |
20 | 5, 1, 6, 7 | sizusglecusglem2 27827 | . . . . . 6 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph ∧ 𝐹 ∈ Fin) → 𝐸 ∈ Fin) |
21 | 20 | pm2.24d 151 | . . . . 5 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph ∧ 𝐹 ∈ Fin) → (¬ 𝐸 ∈ Fin → (♯‘𝐸) ≤ (♯‘𝐹))) |
22 | 21 | 3expia 1120 | . . . 4 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (𝐹 ∈ Fin → (¬ 𝐸 ∈ Fin → (♯‘𝐸) ≤ (♯‘𝐹)))) |
23 | 22 | com13 88 | . . 3 ⊢ (¬ 𝐸 ∈ Fin → (𝐹 ∈ Fin → ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (♯‘𝐸) ≤ (♯‘𝐹)))) |
24 | 19, 23 | pm2.61i 182 | . 2 ⊢ (𝐹 ∈ Fin → ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (♯‘𝐸) ≤ (♯‘𝐹))) |
25 | 7 | fvexi 6785 | . . . 4 ⊢ 𝐹 ∈ V |
26 | nfile 14072 | . . . 4 ⊢ ((𝐸 ∈ V ∧ 𝐹 ∈ V ∧ ¬ 𝐹 ∈ Fin) → (♯‘𝐸) ≤ (♯‘𝐹)) | |
27 | 2, 25, 26 | mp3an12 1450 | . . 3 ⊢ (¬ 𝐹 ∈ Fin → (♯‘𝐸) ≤ (♯‘𝐹)) |
28 | 27 | a1d 25 | . 2 ⊢ (¬ 𝐹 ∈ Fin → ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (♯‘𝐸) ≤ (♯‘𝐹))) |
29 | 24, 28 | pm2.61i 182 | 1 ⊢ ((𝐺 ∈ USGraph ∧ 𝐻 ∈ ComplUSGraph) → (♯‘𝐸) ≤ (♯‘𝐹)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 = wceq 1542 ∃wex 1786 ∈ wcel 2110 Vcvv 3431 class class class wbr 5079 I cid 5489 ↾ cres 5592 –1-1→wf1 6429 ‘cfv 6432 ≼ cdom 8714 Fincfn 8716 ≤ cle 11011 ♯chash 14042 Vtxcvtx 27364 Edgcedg 27415 USGraphcusgr 27517 ComplUSGraphccusgr 27775 |
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 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-int 4886 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-1st 7824 df-2nd 7825 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-1o 8288 df-2o 8289 df-oadd 8292 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-fin 8720 df-dju 9660 df-card 9698 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12582 df-fz 13239 df-hash 14043 df-vtx 27366 df-iedg 27367 df-edg 27416 df-uhgr 27426 df-upgr 27450 df-umgr 27451 df-uspgr 27518 df-usgr 27519 df-fusgr 27682 df-nbgr 27698 df-uvtx 27751 df-cplgr 27776 df-cusgr 27777 |
This theorem is referenced by: fusgrmaxsize 27829 |
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