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Mirrors > Home > ILE Home > Th. List > tapeq1 | Unicode version |
Description: Equality theorem for tight apartness predicate. (Contributed by Jim Kingdon, 8-Feb-2025.) |
Ref | Expression |
---|---|
tapeq1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sseq1 3179 |
. . 3
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2 | breq 4006 |
. . . . . 6
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3 | 2 | notbid 667 |
. . . . 5
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4 | 3 | ralbidv 2477 |
. . . 4
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5 | breq 4006 |
. . . . . 6
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6 | breq 4006 |
. . . . . 6
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7 | 5, 6 | imbi12d 234 |
. . . . 5
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8 | 7 | 2ralbidv 2501 |
. . . 4
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9 | 4, 8 | anbi12d 473 |
. . 3
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10 | breq 4006 |
. . . . . . . 8
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11 | breq 4006 |
. . . . . . . 8
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12 | 10, 11 | orbi12d 793 |
. . . . . . 7
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13 | 5, 12 | imbi12d 234 |
. . . . . 6
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14 | 13 | ralbidv 2477 |
. . . . 5
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15 | 14 | 2ralbidv 2501 |
. . . 4
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16 | 5 | notbid 667 |
. . . . . 6
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17 | 16 | imbi1d 231 |
. . . . 5
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18 | 17 | 2ralbidv 2501 |
. . . 4
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19 | 15, 18 | anbi12d 473 |
. . 3
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20 | 1, 9, 19 | 3anbi123d 1312 |
. 2
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21 | dftap2 7250 |
. 2
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22 | dftap2 7250 |
. 2
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23 | 20, 21, 22 | 3bitr4g 223 |
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-11 1506 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-ral 2460 df-in 3136 df-ss 3143 df-br 4005 df-pap 7247 df-tap 7249 |
This theorem is referenced by: 2omotaplemst 7257 exmidapne 7259 exmidmotap 7260 |
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