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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 7541 | . 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 4285 × cxp 5622 dom cdm 5624 (class class class)co 7358 |
| 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 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-xp 5630 df-dm 5634 df-iota 6448 df-fv 6500 df-ov 7361 |
| This theorem is referenced by: ndmovcl 7543 ndmovrcl 7544 ndmovcom 7545 ndmovass 7546 ndmovdistr 7547 om0x 8446 oaabs2 8577 omabs 8579 eceqoveq 8759 elpmi 8783 elmapex 8785 pmresg 8808 pmsspw 8815 addnidpi 10812 adderpq 10867 mulerpq 10868 elixx3g 13274 ndmioo 13288 elfz2 13430 fz0 13455 elfzoel1 13573 elfzoel2 13574 fzoval 13576 fzofi 13897 restsspw 17351 fucbas 17887 fuchom 17888 xpcbas 18101 xpchomfval 18102 xpccofval 18105 restrcl 23101 ssrest 23120 resstopn 23130 iocpnfordt 23159 icomnfordt 23160 nghmfval 24666 isnghm 24667 topnfbey 30544 cvmtop1 35454 cvmtop2 35455 ndmico 45820 |
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