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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 9527 | . 2 ⊢ (𝐽 ∈ ℤ → 𝐽 ∈ ℝ) | |
| 2 | zre 9527 | . 2 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℝ) | |
| 3 | zre 9527 | . 2 ⊢ (𝐿 ∈ ℤ → 𝐿 ∈ ℝ) | |
| 4 | letr 8304 | . 2 ⊢ ((𝐽 ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝐿 ∈ ℝ) → ((𝐽 ≤ 𝐾 ∧ 𝐾 ≤ 𝐿) → 𝐽 ≤ 𝐿)) | |
| 5 | 1, 2, 3, 4 | syl3an 1316 | 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 1005 ∈ wcel 2202 class class class wbr 4093 ℝcr 8074 ≤ cle 8257 ℤcz 9523 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-pre-ltwlin 8188 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-opab 4156 df-xp 4737 df-cnv 4739 df-iota 5293 df-fv 5341 df-ov 6031 df-pnf 8258 df-mnf 8259 df-xr 8260 df-ltxr 8261 df-le 8262 df-neg 8395 df-z 9524 |
| This theorem is referenced by: uztrn 9817 uzss 9821 elfz0ubfz0 10405 |
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