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Mirrors > Home > ILE Home > Th. List > moeq3dc | Unicode version |
Description: "At most one" property of equality (split into 3 cases). (Contributed by Jim Kingdon, 7-Jul-2018.) |
Ref | Expression |
---|---|
moeq3dc.1 | |
moeq3dc.2 | |
moeq3dc.3 | |
moeq3dc.4 |
Ref | Expression |
---|---|
moeq3dc | DECID DECID |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | moeq3dc.1 | . . 3 | |
2 | moeq3dc.2 | . . 3 | |
3 | moeq3dc.3 | . . 3 | |
4 | moeq3dc.4 | . . 3 | |
5 | 1, 2, 3, 4 | eueq3dc 2886 | . 2 DECID DECID |
6 | eumo 2038 | . 2 | |
7 | 5, 6 | syl6 33 | 1 DECID DECID |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 103 wo 698 DECID wdc 820 w3o 962 wceq 1335 weu 2006 wmo 2007 wcel 2128 cvv 2712 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2139 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-nf 1441 df-sb 1743 df-eu 2009 df-mo 2010 df-clab 2144 df-cleq 2150 df-clel 2153 df-v 2714 |
This theorem is referenced by: (None) |
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