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| Mirrors > Home > MPE Home > Th. List > lt2addsd | Structured version Visualization version GIF version | ||
| Description: Adding both sides of two surreal less-than relations. (Contributed by Scott Fenton, 15-Apr-2025.) |
| Ref | Expression |
|---|---|
| lt2addsd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| lt2addsd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| lt2addsd.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
| lt2addsd.4 | ⊢ (𝜑 → 𝐷 ∈ No ) |
| lt2addsd.5 | ⊢ (𝜑 → 𝐴 <s 𝐶) |
| lt2addsd.6 | ⊢ (𝜑 → 𝐵 <s 𝐷) |
| Ref | Expression |
|---|---|
| lt2addsd | ⊢ (𝜑 → (𝐴 +s 𝐵) <s (𝐶 +s 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lt2addsd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 2 | lt2addsd.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 3 | 1, 2 | addscld 28299 | . 2 ⊢ (𝜑 → (𝐴 +s 𝐵) ∈ No ) |
| 4 | lt2addsd.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ No ) | |
| 5 | 4, 2 | addscld 28299 | . 2 ⊢ (𝜑 → (𝐶 +s 𝐵) ∈ No ) |
| 6 | lt2addsd.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ No ) | |
| 7 | 4, 6 | addscld 28299 | . 2 ⊢ (𝜑 → (𝐶 +s 𝐷) ∈ No ) |
| 8 | lt2addsd.5 | . . 3 ⊢ (𝜑 → 𝐴 <s 𝐶) | |
| 9 | 1, 4, 2 | ltadds1d 28317 | . . 3 ⊢ (𝜑 → (𝐴 <s 𝐶 ↔ (𝐴 +s 𝐵) <s (𝐶 +s 𝐵))) |
| 10 | 8, 9 | mpbid 235 | . 2 ⊢ (𝜑 → (𝐴 +s 𝐵) <s (𝐶 +s 𝐵)) |
| 11 | lt2addsd.6 | . . 3 ⊢ (𝜑 → 𝐵 <s 𝐷) | |
| 12 | 2, 6, 4 | ltadds2d 28316 | . . 3 ⊢ (𝜑 → (𝐵 <s 𝐷 ↔ (𝐶 +s 𝐵) <s (𝐶 +s 𝐷))) |
| 13 | 11, 12 | mpbid 235 | . 2 ⊢ (𝜑 → (𝐶 +s 𝐵) <s (𝐶 +s 𝐷)) |
| 14 | 3, 5, 7, 10, 13 | ltstrd 28053 | 1 ⊢ (𝜑 → (𝐴 +s 𝐵) <s (𝐶 +s 𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 class class class wbr 5102 (class class class)co 7408 No csur 27930 <s clts 27931 +s cadds 28278 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-tp 4588 df-op 4590 df-ot 4592 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-se 5601 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6293 df-ord 6354 df-on 6355 df-suc 6357 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-1st 7984 df-2nd 7985 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-1o 8454 df-2o 8455 df-nadd 8653 df-no 27933 df-lts 27934 df-bday 27935 df-les 28035 df-slts 28077 df-cuts 28079 df-0s 28126 df-made 28146 df-old 28147 df-left 28149 df-right 28150 df-norec2 28268 df-adds 28279 |
| This theorem is used by: addsgt0d 28333 readdscl 28818 |
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