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| Mirrors > Home > MPE Home > Th. List > pw2ltmuldivs2d | Structured version Visualization version GIF version | ||
| Description: Surreal less-than relationship between division and multiplication for powers of two. (Contributed by Scott Fenton, 11-Dec-2025.) |
| Ref | Expression |
|---|---|
| pw2ltdivmulsd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| pw2ltdivmulsd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| pw2ltdivmulsd.3 | ⊢ (𝜑 → 𝑁 ∈ ℕ0s) |
| Ref | Expression |
|---|---|
| pw2ltmuldivs2d | ⊢ (𝜑 → (((2s↑s𝑁) ·s 𝐴) <s 𝐵 ↔ 𝐴 <s (𝐵 /su (2s↑s𝑁)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pw2ltdivmulsd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 2 | pw2ltdivmulsd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 3 | 2no 28588 | . . 3 ⊢ 2s ∈ No | |
| 4 | pw2ltdivmulsd.3 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ0s) | |
| 5 | expscl 28600 | . . 3 ⊢ ((2s ∈ No ∧ 𝑁 ∈ ℕ0s) → (2s↑s𝑁) ∈ No ) | |
| 6 | 3, 4, 5 | sylancr 598 | . 2 ⊢ (𝜑 → (2s↑s𝑁) ∈ No ) |
| 7 | 2nns 28587 | . . . . 5 ⊢ 2s ∈ ℕs | |
| 8 | nnsgt0 28508 | . . . . 5 ⊢ (2s ∈ ℕs → 0s <s 2s) | |
| 9 | 7, 8 | ax-mp 5 | . . . 4 ⊢ 0s <s 2s |
| 10 | expsgt0 28606 | . . . 4 ⊢ ((2s ∈ No ∧ 𝑁 ∈ ℕ0s ∧ 0s <s 2s) → 0s <s (2s↑s𝑁)) | |
| 11 | 3, 9, 10 | mp3an13 1479 | . . 3 ⊢ (𝑁 ∈ ℕ0s → 0s <s (2s↑s𝑁)) |
| 12 | 4, 11 | syl 18 | . 2 ⊢ (𝜑 → 0s <s (2s↑s𝑁)) |
| 13 | pw2recs 28607 | . . 3 ⊢ (𝑁 ∈ ℕ0s → ∃𝑥 ∈ No ((2s↑s𝑁) ·s 𝑥) = 1s ) | |
| 14 | 4, 13 | syl 18 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ No ((2s↑s𝑁) ·s 𝑥) = 1s ) |
| 15 | 1, 2, 6, 12, 14 | ltmuldivs2wd 28371 | 1 ⊢ (𝜑 → (((2s↑s𝑁) ·s 𝐴) <s 𝐵 ↔ 𝐴 <s (𝐵 /su (2s↑s𝑁)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1568 ∈ wcel 2141 ∃wrex 3087 class class class wbr 5108 (class class class)co 7410 No csur 27780 <s clts 27781 0s c0s 27974 1s c1s 27975 ·s cmuls 28275 /su cdivs 28356 ℕ0scn0s 28481 ℕscnns 28482 2sc2s 28579 ↑scexps 28581 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4595 df-ot 4597 df-uni 4872 df-int 4912 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-se 5615 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7862 df-1st 7985 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8452 df-2o 8453 df-oadd 8456 df-nadd 8651 df-no 27783 df-lts 27784 df-bday 27785 df-les 27885 df-slts 27927 df-cuts 27929 df-0s 27976 df-1s 27977 df-made 27996 df-old 27997 df-left 27999 df-right 28000 df-norec 28107 df-norec2 28118 df-adds 28129 df-negs 28190 df-subs 28191 df-muls 28276 df-divs 28357 df-seqs 28453 df-n0s 28483 df-nns 28484 df-zs 28548 df-2s 28580 df-exps 28582 |
| This theorem is referenced by: avglts1d 28622 |
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