| Metamath Proof Explorer |
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Related theorems Unicode version |
| Description: The value of an operation outside its domain. |
| Ref | Expression |
|---|---|
| ndmoprg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eleq2 1538 |
. . . . 5
| |
| 2 | opelxpg 3223 |
. . . . 5
| |
| 3 | 1, 2 | sylan9bb 542 |
. . . 4
|
| 4 | 3 | negbid 613 |
. . 3
|
| 5 | ndmfv 3752 |
. . . 4
| |
| 6 | df-opr 3972 |
. . . 4
| |
| 7 | 5, 6 | syl5eq 1522 |
. . 3
|
| 8 | 4, 7 | syl6bir 215 |
. 2
|
| 9 | 8 | 3impia 832 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ndmoprcl 4051 ndmopr 4052 curry1val 4107 ndmioo 6378 elioo3g 6388 elfz2t 6480 clsrebb 10487 hmeogrp 10532 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2709 ax-pow 2749 ax-pr 2786 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 779 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-rex 1653 df-v 1815 df-dif 2053 df-un 2054 df-in 2055 df-ss 2057 df-nul 2285 df-pw 2407 df-sn 2417 df-pr 2418 df-op 2421 df-uni 2509 df-br 2626 df-opab 2673 df-xp 3191 df-cnv 3193 df-dm 3195 df-rn 3196 df-res 3197 df-ima 3198 df-fv 3205 df-opr 3972 |