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| Mirrors > Home > ILE Home > Th. List > 2strstr1g | GIF version | ||
| Description: A constructed two-slot structure. Version of 2strstrg 13524 not depending on the hard-coded index value of the base set. (Contributed by AV, 22-Sep-2020.) (Revised by Jim Kingdon, 2-Feb-2023.) |
| Ref | Expression |
|---|---|
| 2str1.g | ⊢ 𝐺 = {〈(Base‘ndx), 𝐵〉, 〈𝑁, + 〉} |
| 2str1.b | ⊢ (Base‘ndx) < 𝑁 |
| 2str1.n | ⊢ 𝑁 ∈ ℕ |
| Ref | Expression |
|---|---|
| 2strstr1g | ⊢ ((𝐵 ∈ 𝑉 ∧ + ∈ 𝑊) → 𝐺 Struct 〈(Base‘ndx), 𝑁〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2str1.g | . . . 4 ⊢ 𝐺 = {〈(Base‘ndx), 𝐵〉, 〈𝑁, + 〉} | |
| 2 | eqid 2238 | . . . . . . . 8 ⊢ Slot 𝑁 = Slot 𝑁 | |
| 3 | 2str1.n | . . . . . . . 8 ⊢ 𝑁 ∈ ℕ | |
| 4 | 2, 3 | ndxarg 13426 | . . . . . . 7 ⊢ (Slot 𝑁‘ndx) = 𝑁 |
| 5 | 4 | eqcomi 2242 | . . . . . 6 ⊢ 𝑁 = (Slot 𝑁‘ndx) |
| 6 | 5 | opeq1i 3907 | . . . . 5 ⊢ 〈𝑁, + 〉 = 〈(Slot 𝑁‘ndx), + 〉 |
| 7 | 6 | preq2i 3792 | . . . 4 ⊢ {〈(Base‘ndx), 𝐵〉, 〈𝑁, + 〉} = {〈(Base‘ndx), 𝐵〉, 〈(Slot 𝑁‘ndx), + 〉} |
| 8 | 1, 7 | eqtri 2259 | . . 3 ⊢ 𝐺 = {〈(Base‘ndx), 𝐵〉, 〈(Slot 𝑁‘ndx), + 〉} |
| 9 | basendx 13458 | . . . 4 ⊢ (Base‘ndx) = 1 | |
| 10 | 2str1.b | . . . 4 ⊢ (Base‘ndx) < 𝑁 | |
| 11 | 9, 10 | eqbrtrri 4153 | . . 3 ⊢ 1 < 𝑁 |
| 12 | 8, 2, 11, 3 | 2strstrg 13524 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ + ∈ 𝑊) → 𝐺 Struct 〈1, 𝑁〉) |
| 13 | 9 | opeq1i 3907 | . 2 ⊢ 〈(Base‘ndx), 𝑁〉 = 〈1, 𝑁〉 |
| 14 | 12, 13 | breqtrrdi 4172 | 1 ⊢ ((𝐵 ∈ 𝑉 ∧ + ∈ 𝑊) → 𝐺 Struct 〈(Base‘ndx), 𝑁〉) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 = wceq 1402 ∈ wcel 2209 {cpr 3710 〈cop 3712 class class class wbr 4130 ‘cfv 5377 1c1 8181 < clt 8361 ℕcn 9307 Struct cstr 13399 ndxcnx 13400 Slot cslot 13402 Basecbs 13403 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8271 ax-resscn 8272 ax-1cn 8273 ax-1re 8274 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-addcom 8280 ax-addass 8282 ax-distr 8284 ax-i2m1 8285 ax-0lt1 8286 ax-0id 8288 ax-rnegex 8289 ax-cnre 8291 ax-pre-ltirr 8292 ax-pre-ltwlin 8293 ax-pre-lttrn 8294 ax-pre-apti 8295 ax-pre-ltadd 8296 |
| This proof depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-pnf 8363 df-mnf 8364 df-xr 8365 df-ltxr 8366 df-le 8367 df-sub 8501 df-neg 8502 df-inn 9308 df-n0 9569 df-z 9650 df-uz 9932 df-fz 10423 df-struct 13405 df-ndx 13406 df-slot 13407 df-base 13409 |
| This theorem is used by: 2strbas1g 13528 2strop1g 13529 |
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