| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > pw2ltdivmuls2d | Structured version Visualization version GIF version | ||
| Description: Surreal less-than relationship between division and multiplication for powers of two. (Contributed by Scott Fenton, 23-Feb-2026.) |
| Ref | Expression |
|---|---|
| pw2ltdivmuls2d.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| pw2ltdivmuls2d.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| pw2ltdivmuls2d.3 | ⊢ (𝜑 → 𝑁 ∈ ℕ0s) |
| Ref | Expression |
|---|---|
| pw2ltdivmuls2d | ⊢ (𝜑 → ((𝐴 /su (2s↑s𝑁)) <s 𝐵 ↔ 𝐴 <s (𝐵 ·s (2s↑s𝑁)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pw2ltdivmuls2d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 2 | pw2ltdivmuls2d.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 3 | 2no 28593 | . . 3 ⊢ 2s ∈ No | |
| 4 | pw2ltdivmuls2d.3 | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ0s) | |
| 5 | expscl 28605 | . . 3 ⊢ ((2s ∈ No ∧ 𝑁 ∈ ℕ0s) → (2s↑s𝑁) ∈ No ) | |
| 6 | 3, 4, 5 | sylancr 598 | . 2 ⊢ (𝜑 → (2s↑s𝑁) ∈ No ) |
| 7 | 2nns 28592 | . . . . 5 ⊢ 2s ∈ ℕs | |
| 8 | nnsgt0 28513 | . . . . 5 ⊢ (2s ∈ ℕs → 0s <s 2s) | |
| 9 | 7, 8 | ax-mp 5 | . . . 4 ⊢ 0s <s 2s |
| 10 | expsgt0 28611 | . . . 4 ⊢ ((2s ∈ No ∧ 𝑁 ∈ ℕ0s ∧ 0s <s 2s) → 0s <s (2s↑s𝑁)) | |
| 11 | 3, 9, 10 | mp3an13 1481 | . . 3 ⊢ (𝑁 ∈ ℕ0s → 0s <s (2s↑s𝑁)) |
| 12 | 4, 11 | syl 18 | . 2 ⊢ (𝜑 → 0s <s (2s↑s𝑁)) |
| 13 | pw2recs 28612 | . . 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 | ltdivmuls2wd 28374 | 1 ⊢ (𝜑 → ((𝐴 /su (2s↑s𝑁)) <s 𝐵 ↔ 𝐴 <s (𝐵 ·s (2s↑s𝑁)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2143 ∃wrex 3089 class class class wbr 5110 (class class class)co 7412 No csur 27785 <s clts 27786 0s c0s 27979 1s c1s 27980 ·s cmuls 28280 /su cdivs 28361 ℕ0scn0s 28486 ℕscnns 28487 2sc2s 28584 ↑scexps 28586 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-tp 4595 df-op 4597 df-ot 4599 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-se 5617 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-1o 8454 df-2o 8455 df-oadd 8458 df-nadd 8653 df-no 27788 df-lts 27789 df-bday 27790 df-les 27890 df-slts 27932 df-cuts 27934 df-0s 27981 df-1s 27982 df-made 28001 df-old 28002 df-left 28004 df-right 28005 df-norec 28112 df-norec2 28123 df-adds 28134 df-negs 28195 df-subs 28196 df-muls 28281 df-divs 28362 df-seqs 28458 df-n0s 28488 df-nns 28489 df-zs 28553 df-2s 28585 df-exps 28587 |
| This theorem is referenced by: bdayfinbndlem1 28641 |
| Copyright terms: Public domain | W3C validator |