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| Mirrors > Home > MPE Home > Th. List > ax1ne0 | Structured version Visualization version GIF version | ||
| Description: 1 and 0 are distinct. Axiom 13 of 22 for real and complex numbers, derived from ZF set theory. This construction-dependent theorem should not be referenced directly; instead, use ax-1ne0 11170. (Contributed by NM, 19-Mar-1996.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ax1ne0 | ⊢ 1 ≠ 0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1ne0sr 11082 | . . . 4 ⊢ ¬ 1R = 0R | |
| 2 | 1sr 11067 | . . . . . 6 ⊢ 1R ∈ R | |
| 3 | 2 | elexi 3477 | . . . . 5 ⊢ 1R ∈ V |
| 4 | 3 | eqresr 11123 | . . . 4 ⊢ (〈1R, 0R〉 = 〈0R, 0R〉 ↔ 1R = 0R) |
| 5 | 1, 4 | mtbir 326 | . . 3 ⊢ ¬ 〈1R, 0R〉 = 〈0R, 0R〉 |
| 6 | df-1 11109 | . . . 4 ⊢ 1 = 〈1R, 0R〉 | |
| 7 | df-0 11108 | . . . 4 ⊢ 0 = 〈0R, 0R〉 | |
| 8 | 6, 7 | eqeq12i 2781 | . . 3 ⊢ (1 = 0 ↔ 〈1R, 0R〉 = 〈0R, 0R〉) |
| 9 | 5, 8 | mtbir 326 | . 2 ⊢ ¬ 1 = 0 |
| 10 | 9 | neir 2961 | 1 ⊢ 1 ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 ≠ wne 2958 〈cop 4596 Rcnr 10851 0Rc0r 10852 1Rc1r 10853 0cc0 11101 1c1 11102 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-inf2 9611 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 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-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-1o 8454 df-oadd 8458 df-omul 8459 df-er 8695 df-ec 8697 df-qs 8701 df-ni 10858 df-pli 10859 df-mi 10860 df-lti 10861 df-plpq 10894 df-mpq 10895 df-ltpq 10896 df-enq 10897 df-nq 10898 df-erq 10899 df-plq 10900 df-mq 10901 df-1nq 10902 df-rq 10903 df-ltnq 10904 df-np 10967 df-1p 10968 df-plp 10969 df-ltp 10971 df-enr 11041 df-nr 11042 df-ltr 11045 df-0r 11046 df-1r 11047 df-0 11108 df-1 11109 |
| This theorem is referenced by: (None) |
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