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| Mirrors > Home > ILE Home > Th. List > zletr | GIF version | ||
| Description: Transitive law of ordering for integers. (Contributed by Alexander van der Vekens, 3-Apr-2018.) |
| Ref | Expression |
|---|---|
| zletr | ⊢ ((𝐽 ∈ ℤ ∧ 𝐾 ∈ ℤ ∧ 𝐿 ∈ ℤ) → ((𝐽 ≤ 𝐾 ∧ 𝐾 ≤ 𝐿) → 𝐽 ≤ 𝐿)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zre 9482 | . 2 ⊢ (𝐽 ∈ ℤ → 𝐽 ∈ ℝ) | |
| 2 | zre 9482 | . 2 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℝ) | |
| 3 | zre 9482 | . 2 ⊢ (𝐿 ∈ ℤ → 𝐿 ∈ ℝ) | |
| 4 | letr 8261 | . 2 ⊢ ((𝐽 ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝐿 ∈ ℝ) → ((𝐽 ≤ 𝐾 ∧ 𝐾 ≤ 𝐿) → 𝐽 ≤ 𝐿)) | |
| 5 | 1, 2, 3, 4 | syl3an 1315 | 1 ⊢ ((𝐽 ∈ ℤ ∧ 𝐾 ∈ ℤ ∧ 𝐿 ∈ ℤ) → ((𝐽 ≤ 𝐾 ∧ 𝐾 ≤ 𝐿) → 𝐽 ≤ 𝐿)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 1004 ∈ wcel 2202 class class class wbr 4088 ℝcr 8030 ≤ cle 8214 ℤcz 9478 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-pre-ltwlin 8144 |
| This theorem depends on definitions: df-bi 117 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-xp 4731 df-cnv 4733 df-iota 5286 df-fv 5334 df-ov 6020 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-neg 8352 df-z 9479 |
| This theorem is referenced by: uztrn 9772 uzss 9776 elfz0ubfz0 10359 |
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