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| Mirrors > Home > MPE Home > Th. List > uzm1 | Structured version Visualization version GIF version | ||
| Description: Choices for an element of an upper interval of integers. (Contributed by Jeff Madsen, 2-Sep-2009.) |
| Ref | Expression |
|---|---|
| uzm1 | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 = 𝑀 ∨ (𝑁 − 1) ∈ (ℤ≥‘𝑀))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluzel2 12869 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
| 2 | 1 | a1d 26 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (¬ 𝑁 = 𝑀 → 𝑀 ∈ ℤ)) |
| 3 | eluzelz 12874 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℤ) | |
| 4 | peano2zm 12639 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → (𝑁 − 1) ∈ ℤ) | |
| 5 | 3, 4 | syl 18 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 − 1) ∈ ℤ) |
| 6 | 5 | a1d 26 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (¬ 𝑁 = 𝑀 → (𝑁 − 1) ∈ ℤ)) |
| 7 | df-ne 2965 | . . . . . 6 ⊢ (𝑁 ≠ 𝑀 ↔ ¬ 𝑁 = 𝑀) | |
| 8 | eluzle 12877 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ≤ 𝑁) | |
| 9 | 1 | zred 12702 | . . . . . . . . 9 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℝ) |
| 10 | eluzelre 12875 | . . . . . . . . 9 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℝ) | |
| 11 | 9, 10 | ltlend 11357 | . . . . . . . 8 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀 < 𝑁 ↔ (𝑀 ≤ 𝑁 ∧ 𝑁 ≠ 𝑀))) |
| 12 | 11 | biimprd 251 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ((𝑀 ≤ 𝑁 ∧ 𝑁 ≠ 𝑀) → 𝑀 < 𝑁)) |
| 13 | 8, 12 | mpand 707 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 ≠ 𝑀 → 𝑀 < 𝑁)) |
| 14 | 7, 13 | biimtrrid 246 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (¬ 𝑁 = 𝑀 → 𝑀 < 𝑁)) |
| 15 | zltlem1 12649 | . . . . . 6 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 < 𝑁 ↔ 𝑀 ≤ (𝑁 − 1))) | |
| 16 | 1, 3, 15 | syl2anc 595 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀 < 𝑁 ↔ 𝑀 ≤ (𝑁 − 1))) |
| 17 | 14, 16 | sylibd 242 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (¬ 𝑁 = 𝑀 → 𝑀 ≤ (𝑁 − 1))) |
| 18 | 2, 6, 17 | 3jcad 1145 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (¬ 𝑁 = 𝑀 → (𝑀 ∈ ℤ ∧ (𝑁 − 1) ∈ ℤ ∧ 𝑀 ≤ (𝑁 − 1)))) |
| 19 | eluz2 12870 | . . 3 ⊢ ((𝑁 − 1) ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ (𝑁 − 1) ∈ ℤ ∧ 𝑀 ≤ (𝑁 − 1))) | |
| 20 | 18, 19 | imbitrrdi 255 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (¬ 𝑁 = 𝑀 → (𝑁 − 1) ∈ (ℤ≥‘𝑀))) |
| 21 | 20 | orrd 876 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 = 𝑀 ∨ (𝑁 − 1) ∈ (ℤ≥‘𝑀))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∨ wo 860 ∧ w3a 1101 = wceq 1567 ∈ wcel 2149 ≠ wne 2964 class class class wbr 5113 ‘cfv 6539 (class class class)co 7413 1c1 11103 < clt 11245 ≤ cle 11246 − cmin 11443 ℤcz 12593 ℤ≥cuz 12864 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5273 ax-pow 5339 ax-pr 5407 ax-un 7735 ax-cnex 11158 ax-resscn 11159 ax-1cn 11160 ax-icn 11161 ax-addcl 11162 ax-addrcl 11163 ax-mulcl 11164 ax-mulrcl 11165 ax-mulcom 11166 ax-addass 11167 ax-mulass 11168 ax-distr 11169 ax-i2m1 11170 ax-1ne0 11171 ax-1rid 11172 ax-rnegex 11173 ax-rrecex 11174 ax-cnre 11175 ax-pre-lttri 11176 ax-pre-lttrn 11177 ax-pre-ltadd 11178 ax-pre-mulgt0 11179 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5559 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6305 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6495 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7865 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11445 df-neg 11446 df-nn 12236 df-n0 12507 df-z 12594 df-uz 12865 |
| This theorem is referenced by: uzp1 12901 fzm1 13637 hashfzo 14468 iserex 15710 ntrivcvg 15953 ntrivcvgtail 15956 mulgfval 19137 |
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