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| Mirrors > Home > MPE Home > Th. List > Mathboxes > lttrii | Structured version Visualization version GIF version | ||
| Description: 'Less than' is transitive. (Contributed by SN, 26-Aug-2025.) |
| Ref | Expression |
|---|---|
| lttrii.a | ⊢ 𝐴 ∈ ℝ |
| lttrii.b | ⊢ 𝐵 ∈ ℝ |
| lttrii.c | ⊢ 𝐶 ∈ ℝ |
| lttrii.1 | ⊢ 𝐴 < 𝐵 |
| lttrii.2 | ⊢ 𝐵 < 𝐶 |
| Ref | Expression |
|---|---|
| lttrii | ⊢ 𝐴 < 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lttrii.1 | . 2 ⊢ 𝐴 < 𝐵 | |
| 2 | lttrii.2 | . 2 ⊢ 𝐵 < 𝐶 | |
| 3 | lttrii.a | . . 3 ⊢ 𝐴 ∈ ℝ | |
| 4 | lttrii.b | . . 3 ⊢ 𝐵 ∈ ℝ | |
| 5 | lttrii.c | . . 3 ⊢ 𝐶 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11239 | . 2 ⊢ ((𝐴 < 𝐵 ∧ 𝐵 < 𝐶) → 𝐴 < 𝐶) |
| 7 | 1, 2, 6 | mp2an 692 | 1 ⊢ 𝐴 < 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2111 class class class wbr 5089 ℝcr 11005 < clt 11146 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7668 ax-resscn 11063 ax-pre-lttrn 11081 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-br 5090 df-opab 5152 df-mpt 5171 df-id 5509 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-er 8622 df-en 8870 df-dom 8871 df-sdom 8872 df-pnf 11148 df-mnf 11149 df-ltxr 11151 |
| This theorem is referenced by: asin1half 42460 |
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