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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 11267 | . 2 ⊢ ((𝐴 < 𝐵 ∧ 𝐵 < 𝐶) → 𝐴 < 𝐶) |
| 7 | 1, 2, 6 | mp2an 699 | 1 ⊢ 𝐴 < 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2121 class class class wbr 5075 ℝcr 11032 < clt 11174 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-resscn 11090 ax-pre-lttrn 11108 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11176 df-mnf 11177 df-ltxr 11179 |
| This theorem is referenced by: asin1half 42849 |
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