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Mirrors > Home > ILE Home > Th. List > df-psmet | Unicode version |
Description: Define the set of all pseudometrics on a given base set. In a pseudo metric, two distinct points may have a distance zero. (Contributed by Thierry Arnoux, 7-Feb-2018.) |
Ref | Expression |
---|---|
df-psmet |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cpsmet 13442 |
. 2
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2 | vx |
. . 3
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3 | cvv 2738 |
. . 3
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4 | vy |
. . . . . . . . 9
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5 | 4 | cv 1352 |
. . . . . . . 8
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6 | vd |
. . . . . . . . 9
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7 | 6 | cv 1352 |
. . . . . . . 8
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8 | 5, 5, 7 | co 5875 |
. . . . . . 7
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9 | cc0 7811 |
. . . . . . 7
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10 | 8, 9 | wceq 1353 |
. . . . . 6
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11 | vz |
. . . . . . . . . . 11
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12 | 11 | cv 1352 |
. . . . . . . . . 10
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13 | 5, 12, 7 | co 5875 |
. . . . . . . . 9
![]() ![]() ![]() ![]() ![]() ![]() |
14 | vw |
. . . . . . . . . . . 12
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15 | 14 | cv 1352 |
. . . . . . . . . . 11
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16 | 15, 5, 7 | co 5875 |
. . . . . . . . . 10
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17 | 15, 12, 7 | co 5875 |
. . . . . . . . . 10
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18 | cxad 9770 |
. . . . . . . . . 10
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19 | 16, 17, 18 | co 5875 |
. . . . . . . . 9
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20 | cle 7993 |
. . . . . . . . 9
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21 | 13, 19, 20 | wbr 4004 |
. . . . . . . 8
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22 | 2 | cv 1352 |
. . . . . . . 8
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23 | 21, 14, 22 | wral 2455 |
. . . . . . 7
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24 | 23, 11, 22 | wral 2455 |
. . . . . 6
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25 | 10, 24 | wa 104 |
. . . . 5
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26 | 25, 4, 22 | wral 2455 |
. . . 4
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27 | cxr 7991 |
. . . . 5
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28 | 22, 22 | cxp 4625 |
. . . . 5
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29 | cmap 6648 |
. . . . 5
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30 | 27, 28, 29 | co 5875 |
. . . 4
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31 | 26, 6, 30 | crab 2459 |
. . 3
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32 | 2, 3, 31 | cmpt 4065 |
. 2
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33 | 1, 32 | wceq 1353 |
1
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Colors of variables: wff set class |
This definition is referenced by: psmetrel 13825 ispsmet 13826 psmetdmdm 13827 psmetf 13828 psmet0 13830 psmettri2 13831 psmetres2 13836 |
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