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Mirrors > Home > ILE Home > Th. List > onm | Unicode version |
Description: The class of all ordinal numbers is inhabited. (Contributed by Jim Kingdon, 6-Mar-2019.) |
Ref | Expression |
---|---|
onm |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0elon 4392 |
. . 3
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2 | 0ex 4130 |
. . . 4
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3 | eleq1 2240 |
. . . 4
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4 | 2, 3 | ceqsexv 2776 |
. . 3
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5 | 1, 4 | mpbir 146 |
. 2
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6 | exsimpr 1618 |
. 2
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7 | 5, 6 | ax-mp 5 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 ax-nul 4129 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2739 df-dif 3131 df-in 3135 df-ss 3142 df-nul 3423 df-pw 3577 df-uni 3810 df-tr 4102 df-iord 4366 df-on 4368 |
This theorem is referenced by: (None) |
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