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| Mirrors > Home > MPE Home > Th. List > fzosplitsni | Structured version Visualization version GIF version | ||
| Description: Membership in a half-open range extended by a singleton. (Contributed by Stefan O'Rear, 23-Aug-2015.) |
| Ref | Expression |
|---|---|
| fzosplitsni | ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐶 ∈ (𝐴..^(𝐵 + 1)) ↔ (𝐶 ∈ (𝐴..^𝐵) ∨ 𝐶 = 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fzosplitsn 13731 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴..^(𝐵 + 1)) = ((𝐴..^𝐵) ∪ {𝐵})) | |
| 2 | 1 | eleq2d 2822 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐶 ∈ (𝐴..^(𝐵 + 1)) ↔ 𝐶 ∈ ((𝐴..^𝐵) ∪ {𝐵}))) |
| 3 | elun 4093 | . . 3 ⊢ (𝐶 ∈ ((𝐴..^𝐵) ∪ {𝐵}) ↔ (𝐶 ∈ (𝐴..^𝐵) ∨ 𝐶 ∈ {𝐵})) | |
| 4 | elsn2g 4608 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐶 ∈ {𝐵} ↔ 𝐶 = 𝐵)) | |
| 5 | 4 | orbi2d 916 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((𝐶 ∈ (𝐴..^𝐵) ∨ 𝐶 ∈ {𝐵}) ↔ (𝐶 ∈ (𝐴..^𝐵) ∨ 𝐶 = 𝐵))) |
| 6 | 3, 5 | bitrid 283 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐶 ∈ ((𝐴..^𝐵) ∪ {𝐵}) ↔ (𝐶 ∈ (𝐴..^𝐵) ∨ 𝐶 = 𝐵))) |
| 7 | 2, 6 | bitrd 279 | 1 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐶 ∈ (𝐴..^(𝐵 + 1)) ↔ (𝐶 ∈ (𝐴..^𝐵) ∨ 𝐶 = 𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∨ wo 848 = wceq 1542 ∈ wcel 2114 ∪ cun 3887 {csn 4567 ‘cfv 6498 (class class class)co 7367 1c1 11039 + caddc 11041 ℤ≥cuz 12788 ..^cfzo 13608 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-n0 12438 df-z 12525 df-uz 12789 df-fz 13462 df-fzo 13609 |
| This theorem is referenced by: fzostep1 13741 psgnunilem2 19470 lt6abl 19870 ccatws1f1o 33011 signstfvn 34713 signstfvneq0 34716 chnerlem1 47312 chnerlem2 47313 |
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