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Mirrors > Home > MPE Home > Th. List > Mathboxes > brfinext | Structured version Visualization version GIF version |
Description: The finite field extension relation explicited. (Contributed by Thierry Arnoux, 29-Jul-2023.) |
Ref | Expression |
---|---|
brfinext | ⊢ (𝐸/FldExt𝐹 → (𝐸/FinExt𝐹 ↔ (𝐸[:]𝐹) ∈ ℕ0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fldextfld1 32395 | . . 3 ⊢ (𝐸/FldExt𝐹 → 𝐸 ∈ Field) | |
2 | fldextfld2 32396 | . . 3 ⊢ (𝐸/FldExt𝐹 → 𝐹 ∈ Field) | |
3 | breq12 5111 | . . . . 5 ⊢ ((𝑒 = 𝐸 ∧ 𝑓 = 𝐹) → (𝑒/FldExt𝑓 ↔ 𝐸/FldExt𝐹)) | |
4 | oveq12 7367 | . . . . . 6 ⊢ ((𝑒 = 𝐸 ∧ 𝑓 = 𝐹) → (𝑒[:]𝑓) = (𝐸[:]𝐹)) | |
5 | 4 | eleq1d 2819 | . . . . 5 ⊢ ((𝑒 = 𝐸 ∧ 𝑓 = 𝐹) → ((𝑒[:]𝑓) ∈ ℕ0 ↔ (𝐸[:]𝐹) ∈ ℕ0)) |
6 | 3, 5 | anbi12d 632 | . . . 4 ⊢ ((𝑒 = 𝐸 ∧ 𝑓 = 𝐹) → ((𝑒/FldExt𝑓 ∧ (𝑒[:]𝑓) ∈ ℕ0) ↔ (𝐸/FldExt𝐹 ∧ (𝐸[:]𝐹) ∈ ℕ0))) |
7 | df-finext 32390 | . . . 4 ⊢ /FinExt = {⟨𝑒, 𝑓⟩ ∣ (𝑒/FldExt𝑓 ∧ (𝑒[:]𝑓) ∈ ℕ0)} | |
8 | 6, 7 | brabga 5492 | . . 3 ⊢ ((𝐸 ∈ Field ∧ 𝐹 ∈ Field) → (𝐸/FinExt𝐹 ↔ (𝐸/FldExt𝐹 ∧ (𝐸[:]𝐹) ∈ ℕ0))) |
9 | 1, 2, 8 | syl2anc 585 | . 2 ⊢ (𝐸/FldExt𝐹 → (𝐸/FinExt𝐹 ↔ (𝐸/FldExt𝐹 ∧ (𝐸[:]𝐹) ∈ ℕ0))) |
10 | 9 | bianabs 543 | 1 ⊢ (𝐸/FldExt𝐹 → (𝐸/FinExt𝐹 ↔ (𝐸[:]𝐹) ∈ ℕ0)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 = wceq 1542 ∈ wcel 2107 class class class wbr 5106 (class class class)co 7358 ℕ0cn0 12418 Fieldcfield 20198 /FldExtcfldext 32384 /FinExtcfinext 32385 [:]cextdg 32387 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-ext 2704 ax-sep 5257 ax-nul 5264 ax-pr 5385 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-sb 2069 df-clab 2711 df-cleq 2725 df-clel 2811 df-ral 3062 df-rex 3071 df-rab 3407 df-v 3446 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4284 df-if 4488 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4867 df-br 5107 df-opab 5169 df-xp 5640 df-iota 6449 df-fv 6505 df-ov 7361 df-fldext 32388 df-finext 32390 |
This theorem is referenced by: finexttrb 32408 |
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