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| Mirrors > Home > MPE Home > Th. List > ndmov | Structured version Visualization version GIF version | ||
| Description: The value of an operation outside its domain. (Contributed by NM, 24-Aug-1995.) |
| Ref | Expression |
|---|---|
| ndmov.1 | ⊢ dom 𝐹 = (𝑆 × 𝑆) |
| Ref | Expression |
|---|---|
| ndmov | ⊢ (¬ (𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆) → (𝐴𝐹𝐵) = ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ndmov.1 | . 2 ⊢ dom 𝐹 = (𝑆 × 𝑆) | |
| 2 | ndmovg 7539 | . 2 ⊢ ((dom 𝐹 = (𝑆 × 𝑆) ∧ ¬ (𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆)) → (𝐴𝐹𝐵) = ∅) | |
| 3 | 1, 2 | mpan 690 | 1 ⊢ (¬ (𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆) → (𝐴𝐹𝐵) = ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∅c0 4283 × cxp 5620 dom cdm 5622 (class class class)co 7356 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4284 df-if 4478 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-br 5097 df-opab 5159 df-xp 5628 df-dm 5632 df-iota 6446 df-fv 6498 df-ov 7359 |
| This theorem is referenced by: ndmovcl 7541 ndmovrcl 7542 ndmovcom 7543 ndmovass 7544 ndmovdistr 7545 om0x 8444 oaabs2 8575 omabs 8577 eceqoveq 8757 elpmi 8781 elmapex 8783 pmresg 8806 pmsspw 8813 addnidpi 10810 adderpq 10865 mulerpq 10866 elixx3g 13272 ndmioo 13286 elfz2 13428 fz0 13453 elfzoel1 13571 elfzoel2 13572 fzoval 13574 fzofi 13895 restsspw 17349 fucbas 17885 fuchom 17886 xpcbas 18099 xpchomfval 18100 xpccofval 18103 restrcl 23099 ssrest 23118 resstopn 23128 iocpnfordt 23157 icomnfordt 23158 nghmfval 24664 isnghm 24665 topnfbey 30493 cvmtop1 35403 cvmtop2 35404 ndmico 45752 |
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