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| Mirrors > Home > MPE Home > Th. List > ltmuls2d | Structured version Visualization version GIF version | ||
| Description: Multiplication of both sides of surreal less-than by a positive number. (Contributed by Scott Fenton, 10-Mar-2025.) |
| Ref | Expression |
|---|---|
| ltmuls12d.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| ltmuls12d.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| ltmuls12d.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
| ltmuls12d.4 | ⊢ (𝜑 → 0s <s 𝐶) |
| Ref | Expression |
|---|---|
| ltmuls2d | ⊢ (𝜑 → (𝐴 <s 𝐵 ↔ (𝐶 ·s 𝐴) <s (𝐶 ·s 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltmuls12d.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ No ) | |
| 2 | ltmuls12d.4 | . 2 ⊢ (𝜑 → 0s <s 𝐶) | |
| 3 | ltmuls12d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 4 | ltmuls12d.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 5 | ltmuls2 28163 | . 2 ⊢ (((𝐶 ∈ No ∧ 0s <s 𝐶) ∧ 𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 <s 𝐵 ↔ (𝐶 ·s 𝐴) <s (𝐶 ·s 𝐵))) | |
| 6 | 1, 2, 3, 4, 5 | syl211anc 1379 | 1 ⊢ (𝜑 → (𝐴 <s 𝐵 ↔ (𝐶 ·s 𝐴) <s (𝐶 ·s 𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∈ wcel 2114 class class class wbr 5085 (class class class)co 7367 No csur 27603 <s clts 27604 0s c0s 27797 ·s cmuls 28098 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-ot 4576 df-uni 4851 df-int 4890 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-1o 8405 df-2o 8406 df-nadd 8602 df-no 27606 df-lts 27607 df-bday 27608 df-les 27709 df-slts 27750 df-cuts 27752 df-0s 27799 df-made 27819 df-old 27820 df-left 27822 df-right 27823 df-norec 27930 df-norec2 27941 df-adds 27952 df-negs 28013 df-subs 28014 df-muls 28099 |
| This theorem is referenced by: ltmuls1d 28165 lemuls2d 28166 ltmuls12ad 28175 ltdivmulswd 28191 precsexlem9 28207 precsexlem10 28208 pw2gt0divsd 28437 halfcut 28450 bdaypw2n0bndlem 28455 bdayfinbndlem1 28459 z12bdaylem1 28462 |
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