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| Mirrors > Home > MPE Home > Th. List > Mathboxes > m1modnep2mod | Structured version Visualization version GIF version | ||
| Description: A nonnegative integer minus 1 is not itself plus 2 modulo an integer greater than 3 and the nonnegative integer. (Contributed by AV, 6-Sep-2025.) |
| Ref | Expression |
|---|---|
| m1modnep2mod | ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → ((𝐴 − 1) mod 𝑁) ≠ ((𝐴 + 2) mod 𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluz4nn 12855 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘4) → 𝑁 ∈ ℕ) | |
| 2 | 1 | adantr 480 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → 𝑁 ∈ ℕ) |
| 3 | simpr 484 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → 𝐴 ∈ ℤ) | |
| 4 | 2z 12571 | . . . 4 ⊢ 2 ∈ ℤ | |
| 5 | 4 | a1i 11 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → 2 ∈ ℤ) |
| 6 | 1zzd 12570 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → 1 ∈ ℤ) | |
| 7 | 1le3 12399 | . . . . 5 ⊢ 1 ≤ 3 | |
| 8 | 2p1e3 12329 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 9 | 7, 8 | breqtrri 5136 | . . . 4 ⊢ 1 ≤ (2 + 1) |
| 10 | 9 | a1i 11 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → 1 ≤ (2 + 1)) |
| 11 | eluz2 12805 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘4) ↔ (4 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 4 ≤ 𝑁)) | |
| 12 | df-4 12252 | . . . . . . . . 9 ⊢ 4 = (3 + 1) | |
| 13 | 12 | breq1i 5116 | . . . . . . . 8 ⊢ (4 ≤ 𝑁 ↔ (3 + 1) ≤ 𝑁) |
| 14 | 3z 12572 | . . . . . . . . . . 11 ⊢ 3 ∈ ℤ | |
| 15 | 14 | a1i 11 | . . . . . . . . . 10 ⊢ (4 ∈ ℤ → 3 ∈ ℤ) |
| 16 | zltp1le 12589 | . . . . . . . . . 10 ⊢ ((3 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (3 < 𝑁 ↔ (3 + 1) ≤ 𝑁)) | |
| 17 | 15, 16 | sylan 580 | . . . . . . . . 9 ⊢ ((4 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (3 < 𝑁 ↔ (3 + 1) ≤ 𝑁)) |
| 18 | 17 | biimprd 248 | . . . . . . . 8 ⊢ ((4 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((3 + 1) ≤ 𝑁 → 3 < 𝑁)) |
| 19 | 13, 18 | biimtrid 242 | . . . . . . 7 ⊢ ((4 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (4 ≤ 𝑁 → 3 < 𝑁)) |
| 20 | 19 | 3impia 1117 | . . . . . 6 ⊢ ((4 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 4 ≤ 𝑁) → 3 < 𝑁) |
| 21 | 11, 20 | sylbi 217 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘4) → 3 < 𝑁) |
| 22 | 8, 21 | eqbrtrid 5144 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘4) → (2 + 1) < 𝑁) |
| 23 | 22 | adantr 480 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → (2 + 1) < 𝑁) |
| 24 | submodneaddmod 47342 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 2 ∈ ℤ ∧ 1 ∈ ℤ) ∧ (1 ≤ (2 + 1) ∧ (2 + 1) < 𝑁)) → ((𝐴 + 2) mod 𝑁) ≠ ((𝐴 − 1) mod 𝑁)) | |
| 25 | 2, 3, 5, 6, 10, 23, 24 | syl132anc 1390 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → ((𝐴 + 2) mod 𝑁) ≠ ((𝐴 − 1) mod 𝑁)) |
| 26 | 25 | necomd 2981 | 1 ⊢ ((𝑁 ∈ (ℤ≥‘4) ∧ 𝐴 ∈ ℤ) → ((𝐴 − 1) mod 𝑁) ≠ ((𝐴 + 2) mod 𝑁)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 ∈ wcel 2109 ≠ wne 2926 class class class wbr 5109 ‘cfv 6513 (class class class)co 7389 1c1 11075 + caddc 11077 < clt 11214 ≤ cle 11215 − cmin 11411 ℕcn 12187 2c2 12242 3c3 12243 4c4 12244 ℤcz 12535 ℤ≥cuz 12799 mod cmo 13837 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5253 ax-nul 5263 ax-pow 5322 ax-pr 5389 ax-un 7713 ax-cnex 11130 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 ax-pre-sup 11152 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3756 df-csb 3865 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-pss 3936 df-nul 4299 df-if 4491 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-iun 4959 df-br 5110 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5535 df-eprel 5540 df-po 5548 df-so 5549 df-fr 5593 df-we 5595 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-pred 6276 df-ord 6337 df-on 6338 df-lim 6339 df-suc 6340 df-iota 6466 df-fun 6515 df-fn 6516 df-f 6517 df-f1 6518 df-fo 6519 df-f1o 6520 df-fv 6521 df-riota 7346 df-ov 7392 df-oprab 7393 df-mpo 7394 df-om 7845 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8380 df-er 8673 df-en 8921 df-dom 8922 df-sdom 8923 df-sup 9399 df-inf 9400 df-pnf 11216 df-mnf 11217 df-xr 11218 df-ltxr 11219 df-le 11220 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12188 df-2 12250 df-3 12251 df-4 12252 df-n0 12449 df-z 12536 df-uz 12800 df-rp 12958 df-fz 13475 df-fzo 13622 df-fl 13760 df-mod 13838 df-dvds 16229 |
| This theorem is referenced by: gpg5nbgrvtx03starlem2 48050 |
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