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| Mirrors > Home > MPE Home > Th. List > Mathboxes > nprmdvdsfacm1lem3 | Structured version Visualization version GIF version | ||
| Description: Lemma 3 for nprmdvdsfacm1 48103. (Contributed by AV, 7-Apr-2026.) |
| Ref | Expression |
|---|---|
| nprmdvdsfacm1lem3 | ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → (2 · 𝐴) < (𝑁 − 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3z 12558 | . . . . 5 ⊢ 3 ∈ ℤ | |
| 2 | 1 | a1i 11 | . . . 4 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → 3 ∈ ℤ) |
| 3 | elfzoelz 13611 | . . . . 5 ⊢ (𝐴 ∈ (2..^𝑁) → 𝐴 ∈ ℤ) | |
| 4 | 3 | 3ad2ant2 1140 | . . . 4 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → 𝐴 ∈ ℤ) |
| 5 | nprmdvdsfacm1lem2 48100 | . . . 4 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → 3 ≤ 𝐴) | |
| 6 | eluz2 12792 | . . . 4 ⊢ (𝐴 ∈ (ℤ≥‘3) ↔ (3 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 3 ≤ 𝐴)) | |
| 7 | 2, 4, 5, 6 | syl3anbrc 1350 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → 𝐴 ∈ (ℤ≥‘3)) |
| 8 | 2timesltsqm1 47843 | . . 3 ⊢ (𝐴 ∈ (ℤ≥‘3) → (2 · 𝐴) < ((𝐴↑2) − 1)) | |
| 9 | 7, 8 | syl 17 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → (2 · 𝐴) < ((𝐴↑2) − 1)) |
| 10 | oveq1 7370 | . . . 4 ⊢ (𝑁 = (𝐴↑2) → (𝑁 − 1) = ((𝐴↑2) − 1)) | |
| 11 | 10 | breq2d 5091 | . . 3 ⊢ (𝑁 = (𝐴↑2) → ((2 · 𝐴) < (𝑁 − 1) ↔ (2 · 𝐴) < ((𝐴↑2) − 1))) |
| 12 | 11 | 3ad2ant3 1141 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → ((2 · 𝐴) < (𝑁 − 1) ↔ (2 · 𝐴) < ((𝐴↑2) − 1))) |
| 13 | 9, 12 | mpbird 258 | 1 ⊢ ((𝑁 ∈ (ℤ≥‘6) ∧ 𝐴 ∈ (2..^𝑁) ∧ 𝑁 = (𝐴↑2)) → (2 · 𝐴) < (𝑁 − 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 ∧ w3a 1092 = wceq 1547 ∈ wcel 2119 class class class wbr 5079 ‘cfv 6492 (class class class)co 7363 1c1 11037 · cmul 11041 < clt 11177 ≤ cle 11178 − cmin 11375 2c2 12234 3c3 12235 6c6 12238 ℤcz 12522 ℤ≥cuz 12786 ..^cfzo 13606 ↑cexp 14021 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-cnex 11092 ax-resscn 11093 ax-1cn 11094 ax-icn 11095 ax-addcl 11096 ax-addrcl 11097 ax-mulcl 11098 ax-mulrcl 11099 ax-mulcom 11100 ax-addass 11101 ax-mulass 11102 ax-distr 11103 ax-i2m1 11104 ax-1ne0 11105 ax-1rid 11106 ax-rnegex 11107 ax-rrecex 11108 ax-cnre 11109 ax-pre-lttri 11110 ax-pre-lttrn 11111 ax-pre-ltadd 11112 ax-pre-mulgt0 11113 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-nel 3040 df-ral 3055 df-rex 3065 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7320 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7814 df-1st 7938 df-2nd 7939 df-frecs 8228 df-wrecs 8259 df-recs 8308 df-rdg 8346 df-er 8640 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11179 df-mnf 11180 df-xr 11181 df-ltxr 11182 df-le 11183 df-sub 11377 df-neg 11378 df-nn 12173 df-2 12242 df-3 12243 df-4 12244 df-5 12245 df-6 12246 df-n0 12436 df-z 12523 df-uz 12787 df-rp 12941 df-fz 13460 df-fzo 13607 df-seq 13962 df-exp 14022 |
| This theorem is referenced by: (None) |
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