| Mathbox for Timothy J. O'Malley |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > omexcn | Structured version Visualization version GIF version | ||
| Description: The axioms of the complex numbers imply the Axiom of Infinity (in the form of omex 9645): the map of om2uzf1oi 14097 is a one-to-one onto mapping from ω onto a set of integers, so ω is a set. Compare dcomex 10526 and grothomex 10915. Note that our proof depends on neither ax-inf 9640 nor ax-inf2 9643. (Contributed by Timothy J. O'Malley, 8-Oct-2026.) |
| Ref | Expression |
|---|---|
| omexcn | ⊢ ω ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvex 6898 | . 2 ⊢ (ℤ≥‘0) ∈ V | |
| 2 | 0z 12705 | . . . 4 ⊢ 0 ∈ ℤ | |
| 3 | eqid 2760 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
| 4 | 2, 3 | om2uzf1oi 14097 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→(ℤ≥‘0) |
| 5 | f1ovv 7970 | . . 3 ⊢ ((rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→(ℤ≥‘0) → (ω ∈ V ↔ (ℤ≥‘0) ∈ V)) | |
| 6 | 4, 5 | ax-mp 5 | . 2 ⊢ (ω ∈ V ↔ (ℤ≥‘0) ∈ V) |
| 7 | 1, 6 | mpbir 234 | 1 ⊢ ω ∈ V |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∈ wcel 2144 Vcvv 3450 ↦ cmpt 5185 ↾ cres 5652 –1-1-onto→wf1o 6537 ‘cfv 6538 (class class class)co 7420 ωcom 7877 reccrdg 8418 0cc0 11201 1c1 11202 + caddc 11204 ℤ≥cuz 12966 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11257 ax-resscn 11258 ax-1cn 11259 ax-icn 11260 ax-addcl 11261 ax-addrcl 11262 ax-mulcl 11263 ax-mulrcl 11264 ax-mulcom 11265 ax-addass 11266 ax-mulass 11267 ax-distr 11268 ax-i2m1 11269 ax-1ne0 11270 ax-1rid 11271 ax-rnegex 11272 ax-rrecex 11273 ax-cnre 11274 ax-pre-lttri 11275 ax-pre-lttrn 11276 ax-pre-ltadd 11277 ax-pre-mulgt0 11278 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8300 df-wrecs 8331 df-recs 8380 df-rdg 8419 df-er 8718 df-en 8975 df-dom 8976 df-sdom 8977 df-pnf 11346 df-mnf 11347 df-xr 11348 df-ltxr 11349 df-le 11350 df-sub 11544 df-neg 11545 df-nn 12337 df-n0 12608 df-z 12695 df-uz 12967 |
| This theorem is used by: (None) |
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