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Mathbox for Norm Megill |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > glb0N | Structured version Visualization version Unicode version |
Description: The greatest lower bound of the empty set is the unit element. (Contributed by NM, 5-Dec-2011.) (New usage is discouraged.) |
Ref | Expression |
---|---|
glb0.g |
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glb0.u |
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Ref | Expression |
---|---|
glb0N |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2622 |
. . 3
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2 | eqid 2622 |
. . 3
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3 | glb0.g |
. . 3
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4 | biid 251 |
. . 3
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5 | id 22 |
. . 3
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6 | 0ss 3972 |
. . . 4
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
7 | 6 | a1i 11 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
8 | 1, 2, 3, 4, 5, 7 | glbval 16997 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
9 | glb0.u |
. . . 4
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
10 | 1, 9 | op1cl 34472 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
11 | ral0 4076 |
. . . . . . 7
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12 | 11 | a1bi 352 |
. . . . . 6
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13 | 12 | ralbii 2980 |
. . . . 5
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
14 | ral0 4076 |
. . . . . 6
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
15 | 14 | biantrur 527 |
. . . . 5
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16 | 13, 15 | bitri 264 |
. . . 4
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17 | 10 | adantr 481 |
. . . . . . 7
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
18 | breq1 4656 |
. . . . . . . 8
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
19 | 18 | rspcv 3305 |
. . . . . . 7
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20 | 17, 19 | syl 17 |
. . . . . 6
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21 | 1, 2, 9 | op1le 34479 |
. . . . . 6
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22 | 20, 21 | sylibd 229 |
. . . . 5
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23 | 1, 2, 9 | ople1 34478 |
. . . . . . . . . 10
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24 | 23 | adantlr 751 |
. . . . . . . . 9
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25 | 24 | ex 450 |
. . . . . . . 8
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26 | breq2 4657 |
. . . . . . . . 9
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
27 | 26 | biimprcd 240 |
. . . . . . . 8
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28 | 25, 27 | syl6 35 |
. . . . . . 7
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29 | 28 | com23 86 |
. . . . . 6
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30 | 29 | ralrimdv 2968 |
. . . . 5
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31 | 22, 30 | impbid 202 |
. . . 4
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32 | 16, 31 | syl5bbr 274 |
. . 3
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33 | 10, 32 | riota5 6637 |
. 2
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34 | 8, 33 | eqtrd 2656 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-preset 16928 df-poset 16946 df-lub 16974 df-glb 16975 df-p1 17040 df-oposet 34463 |
This theorem is referenced by: pmapglb2N 35057 pmapglb2xN 35058 |
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