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| Mirrors > Home > ILE Home > Th. List > gtso | GIF version | ||
| Description: 'Greater than' is a strict ordering. (Contributed by JJ, 11-Oct-2018.) |
| Ref | Expression |
|---|---|
| gtso | ⊢ ◡ < Or ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltso 8220 | . 2 ⊢ < Or ℝ | |
| 2 | 0re 8142 | . . 3 ⊢ 0 ∈ ℝ | |
| 3 | elex2 2816 | . . 3 ⊢ (0 ∈ ℝ → ∃𝑥 𝑥 ∈ ℝ) | |
| 4 | cnvsom 5271 | . . 3 ⊢ (∃𝑥 𝑥 ∈ ℝ → ( < Or ℝ ↔ ◡ < Or ℝ)) | |
| 5 | 2, 3, 4 | mp2b 8 | . 2 ⊢ ( < Or ℝ ↔ ◡ < Or ℝ) |
| 6 | 1, 5 | mpbi 145 | 1 ⊢ ◡ < Or ℝ |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∃wex 1538 ∈ wcel 2200 Or wor 4385 ◡ccnv 4717 ℝcr 7994 0cc0 7995 < clt 8177 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4201 ax-pow 4257 ax-pr 4292 ax-un 4523 ax-setind 4628 ax-cnex 8086 ax-resscn 8087 ax-1re 8089 ax-addrcl 8092 ax-rnegex 8104 ax-pre-ltirr 8107 ax-pre-ltwlin 8108 ax-pre-lttrn 8109 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-br 4083 df-opab 4145 df-po 4386 df-iso 4387 df-xp 4724 df-cnv 4726 df-pnf 8179 df-mnf 8180 df-ltxr 8182 |
| This theorem is referenced by: (None) |
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