| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > iunp1 | Structured version Visualization version GIF version | ||
| Description: The addition of the next set to a union indexed by a finite set of sequential integers. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
| Ref | Expression |
|---|---|
| iunp1.1 | ⊢ Ⅎ𝑘𝐵 |
| iunp1.2 | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) |
| iunp1.3 | ⊢ (𝑘 = (𝑁 + 1) → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| iunp1 | ⊢ (𝜑 → ∪ 𝑘 ∈ (𝑀...(𝑁 + 1))𝐴 = (∪ 𝑘 ∈ (𝑀...𝑁)𝐴 ∪ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iunp1.2 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) | |
| 2 | fzsuc 13522 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀...(𝑁 + 1)) = ((𝑀...𝑁) ∪ {(𝑁 + 1)})) | |
| 3 | 1, 2 | syl 17 | . . 3 ⊢ (𝜑 → (𝑀...(𝑁 + 1)) = ((𝑀...𝑁) ∪ {(𝑁 + 1)})) |
| 4 | 3 | iuneq1d 4962 | . 2 ⊢ (𝜑 → ∪ 𝑘 ∈ (𝑀...(𝑁 + 1))𝐴 = ∪ 𝑘 ∈ ((𝑀...𝑁) ∪ {(𝑁 + 1)})𝐴) |
| 5 | iunxun 5037 | . . 3 ⊢ ∪ 𝑘 ∈ ((𝑀...𝑁) ∪ {(𝑁 + 1)})𝐴 = (∪ 𝑘 ∈ (𝑀...𝑁)𝐴 ∪ ∪ 𝑘 ∈ {(𝑁 + 1)}𝐴) | |
| 6 | 5 | a1i 11 | . 2 ⊢ (𝜑 → ∪ 𝑘 ∈ ((𝑀...𝑁) ∪ {(𝑁 + 1)})𝐴 = (∪ 𝑘 ∈ (𝑀...𝑁)𝐴 ∪ ∪ 𝑘 ∈ {(𝑁 + 1)}𝐴)) |
| 7 | iunp1.1 | . . . . 5 ⊢ Ⅎ𝑘𝐵 | |
| 8 | ovex 7397 | . . . . 5 ⊢ (𝑁 + 1) ∈ V | |
| 9 | iunp1.3 | . . . . 5 ⊢ (𝑘 = (𝑁 + 1) → 𝐴 = 𝐵) | |
| 10 | 7, 8, 9 | iunxsnf 45521 | . . . 4 ⊢ ∪ 𝑘 ∈ {(𝑁 + 1)}𝐴 = 𝐵 |
| 11 | 10 | a1i 11 | . . 3 ⊢ (𝜑 → ∪ 𝑘 ∈ {(𝑁 + 1)}𝐴 = 𝐵) |
| 12 | 11 | uneq2d 4109 | . 2 ⊢ (𝜑 → (∪ 𝑘 ∈ (𝑀...𝑁)𝐴 ∪ ∪ 𝑘 ∈ {(𝑁 + 1)}𝐴) = (∪ 𝑘 ∈ (𝑀...𝑁)𝐴 ∪ 𝐵)) |
| 13 | 4, 6, 12 | 3eqtrd 2776 | 1 ⊢ (𝜑 → ∪ 𝑘 ∈ (𝑀...(𝑁 + 1))𝐴 = (∪ 𝑘 ∈ (𝑀...𝑁)𝐴 ∪ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 Ⅎwnfc 2884 ∪ cun 3888 {csn 4568 ∪ ciun 4934 ‘cfv 6496 (class class class)co 7364 1c1 11036 + caddc 11038 ℤ≥cuz 12785 ...cfz 13458 |
| 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 2709 ax-sep 5232 ax-nul 5242 ax-pow 5306 ax-pr 5374 ax-un 7686 ax-cnex 11091 ax-resscn 11092 ax-1cn 11093 ax-icn 11094 ax-addcl 11095 ax-addrcl 11096 ax-mulcl 11097 ax-mulrcl 11098 ax-mulcom 11099 ax-addass 11100 ax-mulass 11101 ax-distr 11102 ax-i2m1 11103 ax-1ne0 11104 ax-1rid 11105 ax-rnegex 11106 ax-rrecex 11107 ax-cnre 11108 ax-pre-lttri 11109 ax-pre-lttrn 11110 ax-pre-ltadd 11111 ax-pre-mulgt0 11112 |
| 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5523 df-eprel 5528 df-po 5536 df-so 5537 df-fr 5581 df-we 5583 df-xp 5634 df-rel 5635 df-cnv 5636 df-co 5637 df-dm 5638 df-rn 5639 df-res 5640 df-ima 5641 df-pred 6263 df-ord 6324 df-on 6325 df-lim 6326 df-suc 6327 df-iota 6452 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-f1o 6503 df-fv 6504 df-riota 7321 df-ov 7367 df-oprab 7368 df-mpo 7369 df-om 7815 df-1st 7939 df-2nd 7940 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 11178 df-mnf 11179 df-xr 11180 df-ltxr 11181 df-le 11182 df-sub 11376 df-neg 11377 df-nn 12172 df-n0 12435 df-z 12522 df-uz 12786 df-fz 13459 |
| This theorem is referenced by: carageniuncllem1 46975 caratheodorylem1 46980 |
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