| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > 0r | GIF version | ||
| Description: The constant 0R is a signed real. (Contributed by NM, 9-Aug-1995.) |
| Ref | Expression |
|---|---|
| 0r | ⊢ 0R ∈ R |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1pr 7928 | . . . 4 ⊢ 1P ∈ P | |
| 2 | opelxpi 4808 | . . . 4 ⊢ ((1P ∈ P ∧ 1P ∈ P) → 〈1P, 1P〉 ∈ (P × P)) | |
| 3 | 1, 1, 2 | mp2an 430 | . . 3 ⊢ 〈1P, 1P〉 ∈ (P × P) |
| 4 | enrex 8111 | . . . 4 ⊢ ~R ∈ V | |
| 5 | 4 | ecelqsi 6867 | . . 3 ⊢ (〈1P, 1P〉 ∈ (P × P) → [〈1P, 1P〉] ~R ∈ ((P × P) / ~R )) |
| 6 | 3, 5 | ax-mp 5 | . 2 ⊢ [〈1P, 1P〉] ~R ∈ ((P × P) / ~R ) |
| 7 | df-0r 8105 | . 2 ⊢ 0R = [〈1P, 1P〉] ~R | |
| 8 | df-nr 8101 | . 2 ⊢ R = ((P × P) / ~R ) | |
| 9 | 6, 7, 8 | 3eltr4i 2320 | 1 ⊢ 0R ∈ R |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 〈cop 3712 × cxp 4774 [cec 6809 / cqs 6810 Pcnp 7665 1Pc1p 7666 ~R cer 7670 Rcnr 7671 0Rc0r 7672 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-eprel 4436 df-id 4440 df-po 4443 df-iso 4444 df-iord 4513 df-on 4515 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-irdg 6645 df-1o 6691 df-oadd 6695 df-omul 6696 df-er 6811 df-ec 6813 df-qs 6817 df-ni 7678 df-pli 7679 df-mi 7680 df-lti 7681 df-plpq 7718 df-mpq 7719 df-enq 7721 df-nqqs 7722 df-plqqs 7723 df-mqqs 7724 df-1nqqs 7725 df-rq 7726 df-ltnqqs 7727 df-inp 7840 df-i1p 7841 df-enr 8100 df-nr 8101 df-0r 8105 |
| This theorem is used by: addgt0sr 8149 ltadd1sr 8150 map2psrprg 8179 suplocsrlempr 8181 opelreal 8201 elreal 8202 elrealeu 8203 elreal2 8204 eqresr 8210 addresr 8211 mulresr 8212 pitonn 8222 peano2nnnn 8227 axresscn 8234 axicn 8237 axi2m1 8249 ax0id 8252 axprecex 8254 axcnre 8255 |
| Copyright terms: Public domain | W3C validator |