![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > ialgrlemconst | GIF version |
Description: Lemma for ialgr0 11761. Closure of a constant function, in a form suitable for theorems such as seq3-1 10264 or seqf 10265. (Contributed by Jim Kingdon, 22-Jul-2021.) |
Ref | Expression |
---|---|
ialgrlemconst.z | ⊢ 𝑍 = (ℤ≥‘𝑀) |
ialgrlemconst.a | ⊢ (𝜑 → 𝐴 ∈ 𝑆) |
Ref | Expression |
---|---|
ialgrlemconst | ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → ((𝑍 × {𝐴})‘𝑥) ∈ 𝑆) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ialgrlemconst.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑆) | |
2 | ialgrlemconst.z | . . . . 5 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
3 | 2 | eleq2i 2207 | . . . 4 ⊢ (𝑥 ∈ 𝑍 ↔ 𝑥 ∈ (ℤ≥‘𝑀)) |
4 | 3 | biimpri 132 | . . 3 ⊢ (𝑥 ∈ (ℤ≥‘𝑀) → 𝑥 ∈ 𝑍) |
5 | fvconst2g 5642 | . . 3 ⊢ ((𝐴 ∈ 𝑆 ∧ 𝑥 ∈ 𝑍) → ((𝑍 × {𝐴})‘𝑥) = 𝐴) | |
6 | 1, 4, 5 | syl2an 287 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → ((𝑍 × {𝐴})‘𝑥) = 𝐴) |
7 | 1 | adantr 274 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → 𝐴 ∈ 𝑆) |
8 | 6, 7 | eqeltrd 2217 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ (ℤ≥‘𝑀)) → ((𝑍 × {𝐴})‘𝑥) ∈ 𝑆) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1332 ∈ wcel 1481 {csn 3532 × cxp 4545 ‘cfv 5131 ℤ≥cuz 9350 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-rex 2423 df-v 2691 df-sbc 2914 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-br 3938 df-opab 3998 df-mpt 3999 df-id 4223 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-rn 4558 df-iota 5096 df-fun 5133 df-fn 5134 df-f 5135 df-fv 5139 |
This theorem is referenced by: ialgr0 11761 algrp1 11763 |
Copyright terms: Public domain | W3C validator |