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Mirrors > Home > MPE Home > Th. List > ramubcl | Structured version Visualization version GIF version |
Description: If the Ramsey number is upper bounded, then it is an integer. (Contributed by Mario Carneiro, 20-Apr-2015.) |
Ref | Expression |
---|---|
ramubcl | β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β (π Ramsey πΉ) β β0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0re 12432 | . . . . . 6 β’ (π΄ β β0 β π΄ β β) | |
2 | ltpnf 13051 | . . . . . . 7 β’ (π΄ β β β π΄ < +β) | |
3 | rexr 11211 | . . . . . . . 8 β’ (π΄ β β β π΄ β β*) | |
4 | pnfxr 11219 | . . . . . . . 8 β’ +β β β* | |
5 | xrltnle 11232 | . . . . . . . 8 β’ ((π΄ β β* β§ +β β β*) β (π΄ < +β β Β¬ +β β€ π΄)) | |
6 | 3, 4, 5 | sylancl 587 | . . . . . . 7 β’ (π΄ β β β (π΄ < +β β Β¬ +β β€ π΄)) |
7 | 2, 6 | mpbid 231 | . . . . . 6 β’ (π΄ β β β Β¬ +β β€ π΄) |
8 | 1, 7 | syl 17 | . . . . 5 β’ (π΄ β β0 β Β¬ +β β€ π΄) |
9 | 8 | ad2antrl 727 | . . . 4 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β Β¬ +β β€ π΄) |
10 | simprr 772 | . . . . 5 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β (π Ramsey πΉ) β€ π΄) | |
11 | breq1 5114 | . . . . 5 β’ ((π Ramsey πΉ) = +β β ((π Ramsey πΉ) β€ π΄ β +β β€ π΄)) | |
12 | 10, 11 | syl5ibcom 244 | . . . 4 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β ((π Ramsey πΉ) = +β β +β β€ π΄)) |
13 | 9, 12 | mtod 197 | . . 3 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β Β¬ (π Ramsey πΉ) = +β) |
14 | elsni 4609 | . . 3 β’ ((π Ramsey πΉ) β {+β} β (π Ramsey πΉ) = +β) | |
15 | 13, 14 | nsyl 140 | . 2 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β Β¬ (π Ramsey πΉ) β {+β}) |
16 | ramcl2 16900 | . . . . 5 β’ ((π β β0 β§ π β π β§ πΉ:π βΆβ0) β (π Ramsey πΉ) β (β0 βͺ {+β})) | |
17 | 16 | adantr 482 | . . . 4 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β (π Ramsey πΉ) β (β0 βͺ {+β})) |
18 | elun 4114 | . . . 4 β’ ((π Ramsey πΉ) β (β0 βͺ {+β}) β ((π Ramsey πΉ) β β0 β¨ (π Ramsey πΉ) β {+β})) | |
19 | 17, 18 | sylib 217 | . . 3 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β ((π Ramsey πΉ) β β0 β¨ (π Ramsey πΉ) β {+β})) |
20 | 19 | ord 863 | . 2 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β (Β¬ (π Ramsey πΉ) β β0 β (π Ramsey πΉ) β {+β})) |
21 | 15, 20 | mt3d 148 | 1 β’ (((π β β0 β§ π β π β§ πΉ:π βΆβ0) β§ (π΄ β β0 β§ (π Ramsey πΉ) β€ π΄)) β (π Ramsey πΉ) β β0) |
Colors of variables: wff setvar class |
Syntax hints: Β¬ wn 3 β wi 4 β wb 205 β§ wa 397 β¨ wo 846 β§ w3a 1088 = wceq 1542 β wcel 2107 βͺ cun 3912 {csn 4592 class class class wbr 5111 βΆwf 6498 (class class class)co 7363 βcr 11060 +βcpnf 11196 β*cxr 11198 < clt 11199 β€ cle 11200 β0cn0 12423 Ramsey cram 16883 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2703 ax-rep 5248 ax-sep 5262 ax-nul 5269 ax-pow 5326 ax-pr 5390 ax-un 7678 ax-cnex 11117 ax-resscn 11118 ax-1cn 11119 ax-icn 11120 ax-addcl 11121 ax-addrcl 11122 ax-mulcl 11123 ax-mulrcl 11124 ax-mulcom 11125 ax-addass 11126 ax-mulass 11127 ax-distr 11128 ax-i2m1 11129 ax-1ne0 11130 ax-1rid 11131 ax-rnegex 11132 ax-rrecex 11133 ax-cnre 11134 ax-pre-lttri 11135 ax-pre-lttrn 11136 ax-pre-ltadd 11137 ax-pre-mulgt0 11138 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 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 3352 df-reu 3353 df-rab 3407 df-v 3449 df-sbc 3744 df-csb 3860 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3933 df-nul 4289 df-if 4493 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4872 df-iun 4962 df-br 5112 df-opab 5174 df-mpt 5195 df-tr 5229 df-id 5537 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5594 df-we 5596 df-xp 5645 df-rel 5646 df-cnv 5647 df-co 5648 df-dm 5649 df-rn 5650 df-res 5651 df-ima 5652 df-pred 6259 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-riota 7319 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7809 df-1st 7927 df-2nd 7928 df-frecs 8218 df-wrecs 8249 df-recs 8323 df-rdg 8362 df-er 8656 df-map 8775 df-en 8892 df-dom 8893 df-sdom 8894 df-sup 9388 df-inf 9389 df-pnf 11201 df-mnf 11202 df-xr 11203 df-ltxr 11204 df-le 11205 df-sub 11397 df-neg 11398 df-nn 12164 df-n0 12424 df-z 12510 df-uz 12774 df-ram 16885 |
This theorem is referenced by: ramlb 16903 0ram 16904 ram0 16906 ramz2 16908 ramcl 16913 |
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