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Mirrors > Home > MPE Home > Th. List > dvdszrcl | Structured version Visualization version GIF version |
Description: Reverse closure for the divisibility relation. (Contributed by Stefan O'Rear, 5-Sep-2015.) |
Ref | Expression |
---|---|
dvdszrcl | ⊢ (𝑋 ∥ 𝑌 → (𝑋 ∈ ℤ ∧ 𝑌 ∈ ℤ)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-dvds 16303 | . . 3 ⊢ ∥ = {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ ∃𝑧 ∈ ℤ (𝑧 · 𝑥) = 𝑦)} | |
2 | opabssxp 5792 | . . 3 ⊢ {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ ℤ ∧ 𝑦 ∈ ℤ) ∧ ∃𝑧 ∈ ℤ (𝑧 · 𝑥) = 𝑦)} ⊆ (ℤ × ℤ) | |
3 | 1, 2 | eqsstri 4043 | . 2 ⊢ ∥ ⊆ (ℤ × ℤ) |
4 | 3 | brel 5765 | 1 ⊢ (𝑋 ∥ 𝑌 → (𝑋 ∈ ℤ ∧ 𝑌 ∈ ℤ)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1537 ∈ wcel 2108 ∃wrex 3076 class class class wbr 5166 {copab 5228 × cxp 5698 (class class class)co 7448 · cmul 11189 ℤcz 12639 ∥ cdvds 16302 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-sb 2065 df-clab 2718 df-cleq 2732 df-clel 2819 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-dif 3979 df-un 3981 df-ss 3993 df-nul 4353 df-if 4549 df-sn 4649 df-pr 4651 df-op 4655 df-br 5167 df-opab 5229 df-xp 5706 df-dvds 16303 |
This theorem is referenced by: dvdsmod0 16308 p1modz1 16309 dvdsmodexp 16310 dvdsaddre2b 16355 dvdsabseq 16361 divconjdvds 16363 evenelz 16384 4dvdseven 16421 dfgcd2 16593 dvdsmulgcd 16603 dvdsnprmd 16737 dvdszzq 16768 oddvdsi 19590 odmulg 19598 gexdvdsi 19625 dvdschrmulg 21566 nnproddivdvdsd 41957 lcmineqlem14 41999 aks6d1c6isolem3 42133 grpods 42151 nzss 44286 nzin 44287 |
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