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| Description: The set of natural numbers is strictly dominated by the set of real numbers, i.e. the real numbers are uncountable. The proof consists of lemmas ruclem1 7543 through ruclem39 7581 and this final piece. Our proof is based on the proof of Theorem 5.18 of [Truss] p. 114. See ruclem39 7581 for the function existence version of this theorem. For an informal discussion of this proof, see http://us.metamath.org/mpegif/mmcomplex.html#uncountable. |
| Ref | Expression |
|---|---|
| ruc |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | brsdom 4399 |
. 2
| |
| 2 | reex 5332 |
. . 3
| |
| 3 | nnssre 5941 |
. . 3
| |
| 4 | ssdom2g 4427 |
. . 3
| |
| 5 | 2, 3, 4 | mp2 43 |
. 2
|
| 6 | ruclem39 7581 |
. . . . 5
| |
| 7 | f1ofo 3711 |
. . . . 5
| |
| 8 | 6, 7 | mto 106 |
. . . 4
|
| 9 | 8 | nex 1105 |
. . 3
|
| 10 | 2 | bren 4395 |
. . 3
|
| 11 | 9, 10 | mtbir 192 |
. 2
|
| 12 | 1, 5, 11 | mpbir2an 734 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: resdomq 7583 aleph1re 7584 aleph1irr 7611 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 966 ax-gen 967 ax-8 968 ax-9 969 ax-10 970 ax-11 971 ax-12 972 ax-13 973 ax-14 974 ax-17 975 ax-4 977 ax-5o 979 ax-6o 982 ax-9o 1127 ax-10o 1144 ax-16 1214 ax-11o 1222 ax-ext 1464 ax-rep 2708 ax-sep 2718 ax-nul 2725 ax-pow 2758 ax-pr 2795 ax-un 2882 ax-inf2 4642 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 780 df-3an 781 df-ex 985 df-sb 1176 df-eu 1386 df-mo 1387 df-clab 1470 df-cleq 1475 df-clel 1478 df-ne 1594 df-nel 1595 df-ral 1656 df-rex 1657 df-reu 1658 df-rab 1659 df-v 1819 df-sbc 1949 df-csb 2012 df-dif 2060 df-un 2061 df-in 2062 df-ss 2064 df-pss 2066 df-nul 2292 df-if 2374 df-pw 2414 df-sn 2424 df-pr 2425 df-tp 2427 df-op 2428 df-uni 2518 df-int 2548 df-iun 2582 df-br 2635 df-opab 2682 df-tr 2696 df-eprel 2848 df-id 2851 df-po 2856 df-so 2866 df-fr 2933 df-we 2950 df-ord 2967 df-on 2968 df-lim 2969 df-suc 2970 df-om 3148 df-xp 3200 df-rel 3201 df-cnv 3202 df-co 3203 df-dm 3204 df-rn 3205 df-res 3206 df-ima 3207 df-fun 3208 df-fn 3209 df-f 3210 df-f1 3211 df-fo 3212 df-f1o 3213 df-fv 3214 df-rdg 3948 df-opr 3981 df-oprab 3982 df-1st 4095 df-2nd 4096 df-1o 4149 df-oadd 4151 df-omul 4152 df-er 4277 df-ec 4279 df-qs 4282 df-en 4386 df-dom 4387 df-sdom 4388 df-sup 4589 df-ni 5020 df-pli 5021 df-mi 5022 df-lti 5023 df-plpq 5055 df-mpq 5056 df-enq 5057 df-nq 5058 df-plq 5059 df-mq 5060 df-rq 5061 df-ltq 5062 df-1q 5063 df-np 5106 df-1p 5107 df-plp 5108 df-mp 5109 df-ltp 5110 df-plpr 5184 df-mpr 5185 df-enr 5186 df-nr 5187 df-plr 5188 df-mr 5189 df-ltr 5190 df-0r 5191 df-1r 5192 df-m1r 5193 df-c 5260 df-0 5261 df-1 5262 df-i 5263 df-r 5264 df-plus 5265 df-mul 5266 df-lt 5267 df-sub 5376 df-neg 5378 df-pnf 5507 df-mnf 5508 df-xr 5509 df-ltxr 5510 df-le 5511 df-div 5723 df-n 5939 df-2 5984 df-3 5985 df-n0 6132 df-z 6168 df-seq1 6509 |