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Mirrors > Home > MPE Home > Th. List > elmopn2 | Structured version Unicode version |
Description: A defining property of an open set of a metric space. (Contributed by NM, 5-May-2007.) (Revised by Mario Carneiro, 12-Nov-2013.) |
Ref | Expression |
---|---|
mopnval.1 |
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Ref | Expression |
---|---|
elmopn2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mopnval.1 |
. . 3
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2 | 1 | elmopn 20148 |
. 2
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3 | ssel2 3458 |
. . . . . 6
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4 | blssex 20133 |
. . . . . 6
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5 | 3, 4 | sylan2 474 |
. . . . 5
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6 | 5 | anassrs 648 |
. . . 4
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7 | 6 | ralbidva 2843 |
. . 3
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8 | 7 | pm5.32da 641 |
. 2
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9 | 2, 8 | bitrd 253 |
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 1592 ax-4 1603 ax-5 1671 ax-6 1710 ax-7 1730 ax-8 1760 ax-9 1762 ax-10 1777 ax-11 1782 ax-12 1794 ax-13 1955 ax-ext 2432 ax-sep 4520 ax-nul 4528 ax-pow 4577 ax-pr 4638 ax-un 6481 ax-cnex 9448 ax-resscn 9449 ax-1cn 9450 ax-icn 9451 ax-addcl 9452 ax-addrcl 9453 ax-mulcl 9454 ax-mulrcl 9455 ax-mulcom 9456 ax-addass 9457 ax-mulass 9458 ax-distr 9459 ax-i2m1 9460 ax-1ne0 9461 ax-1rid 9462 ax-rnegex 9463 ax-rrecex 9464 ax-cnre 9465 ax-pre-lttri 9466 ax-pre-lttrn 9467 ax-pre-ltadd 9468 ax-pre-mulgt0 9469 ax-pre-sup 9470 |
This theorem depends on definitions: df-bi 185 df-or 370 df-an 371 df-3or 966 df-3an 967 df-tru 1373 df-ex 1588 df-nf 1591 df-sb 1703 df-eu 2266 df-mo 2267 df-clab 2440 df-cleq 2446 df-clel 2449 df-nfc 2604 df-ne 2649 df-nel 2650 df-ral 2803 df-rex 2804 df-reu 2805 df-rmo 2806 df-rab 2807 df-v 3078 df-sbc 3293 df-csb 3395 df-dif 3438 df-un 3440 df-in 3442 df-ss 3449 df-pss 3451 df-nul 3745 df-if 3899 df-pw 3969 df-sn 3985 df-pr 3987 df-tp 3989 df-op 3991 df-uni 4199 df-iun 4280 df-br 4400 df-opab 4458 df-mpt 4459 df-tr 4493 df-eprel 4739 df-id 4743 df-po 4748 df-so 4749 df-fr 4786 df-we 4788 df-ord 4829 df-on 4830 df-lim 4831 df-suc 4832 df-xp 4953 df-rel 4954 df-cnv 4955 df-co 4956 df-dm 4957 df-rn 4958 df-res 4959 df-ima 4960 df-iota 5488 df-fun 5527 df-fn 5528 df-f 5529 df-f1 5530 df-fo 5531 df-f1o 5532 df-fv 5533 df-riota 6160 df-ov 6202 df-oprab 6203 df-mpt2 6204 df-om 6586 df-1st 6686 df-2nd 6687 df-recs 6941 df-rdg 6975 df-er 7210 df-map 7325 df-en 7420 df-dom 7421 df-sdom 7422 df-sup 7801 df-pnf 9530 df-mnf 9531 df-xr 9532 df-ltxr 9533 df-le 9534 df-sub 9707 df-neg 9708 df-div 10104 df-nn 10433 df-2 10490 df-n0 10690 df-z 10757 df-uz 10972 df-q 11064 df-rp 11102 df-xneg 11199 df-xadd 11200 df-xmul 11201 df-topgen 14500 df-psmet 17933 df-xmet 17934 df-bl 17936 df-mopn 17937 df-bases 18636 |
This theorem is referenced by: metrest 20230 tgioo 20504 xrsmopn 20520 recld2 20522 tpr2rico 26486 dya2icoseg2 26836 opnrebl 28662 opnrebl2 28663 |
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