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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 28431 | . . 3 ⊢ 2s ∈ No | |
| 4 | pw2ltdivmulsd.3 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ0s) | |
| 5 | expscl 28443 | . . 3 ⊢ ((2s ∈ No ∧ 𝑁 ∈ ℕ0s) → (2s↑s𝑁) ∈ No ) | |
| 6 | 3, 4, 5 | sylancr 594 | . 2 ⊢ (𝜑 → (2s↑s𝑁) ∈ No ) |
| 7 | 2nns 28430 | . . . . 5 ⊢ 2s ∈ ℕs | |
| 8 | nnsgt0 28351 | . . . . 5 ⊢ (2s ∈ ℕs → 0s <s 2s) | |
| 9 | 7, 8 | ax-mp 5 | . . . 4 ⊢ 0s <s 2s |
| 10 | expsgt0 28449 | . . . 4 ⊢ ((2s ∈ No ∧ 𝑁 ∈ ℕ0s ∧ 0s <s 2s) → 0s <s (2s↑s𝑁)) | |
| 11 | 3, 9, 10 | mp3an13 1461 | . . 3 ⊢ (𝑁 ∈ ℕ0s → 0s <s (2s↑s𝑁)) |
| 12 | 4, 11 | syl 17 | . 2 ⊢ (𝜑 → 0s <s (2s↑s𝑁)) |
| 13 | pw2recs 28450 | . . 3 ⊢ (𝑁 ∈ ℕ0s → ∃𝑥 ∈ No ((2s↑s𝑁) ·s 𝑥) = 1s ) | |
| 14 | 4, 13 | syl 17 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ No ((2s↑s𝑁) ·s 𝑥) = 1s ) |
| 15 | 1, 2, 6, 12, 14 | ltmuldivs2wd 28214 | 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 208 = wceq 1548 ∈ wcel 2121 ∃wrex 3065 class class class wbr 5074 (class class class)co 7359 No csur 27624 <s clts 27625 0s c0s 27817 1s c1s 27818 ·s cmuls 28118 /su cdivs 28199 ℕ0scn0s 28324 ℕscnns 28325 2sc2s 28422 ↑scexps 28424 |
| 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-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 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-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-pss 3904 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-tp 4562 df-op 4564 df-ot 4566 df-uni 4841 df-int 4880 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-se 5574 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-om 7810 df-1st 7933 df-2nd 7934 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8343 df-1o 8399 df-2o 8400 df-oadd 8403 df-nadd 8596 df-no 27627 df-lts 27628 df-bday 27629 df-les 27729 df-slts 27770 df-cuts 27772 df-0s 27819 df-1s 27820 df-made 27839 df-old 27840 df-left 27842 df-right 27843 df-norec 27950 df-norec2 27961 df-adds 27972 df-negs 28033 df-subs 28034 df-muls 28119 df-divs 28200 df-seqs 28296 df-n0s 28326 df-nns 28327 df-zs 28391 df-2s 28423 df-exps 28425 |
| This theorem is referenced by: avglts1d 28465 |
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