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Mirrors > Home > ILE Home > Th. List > nn0lt2 | Unicode version |
Description: A nonnegative integer less than 2 must be 0 or 1. (Contributed by Alexander van der Vekens, 16-Sep-2018.) |
Ref | Expression |
---|---|
nn0lt2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | olc 701 |
. . 3
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2 | 1 | a1i 9 |
. 2
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3 | nn0z 9098 |
. . . . . 6
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4 | 2z 9106 |
. . . . . 6
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5 | zltlem1 9135 |
. . . . . 6
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6 | 3, 4, 5 | sylancl 410 |
. . . . 5
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7 | 2m1e1 8862 |
. . . . . 6
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8 | 7 | breq2i 3945 |
. . . . 5
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9 | 6, 8 | syl6bb 195 |
. . . 4
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10 | necom 2393 |
. . . . 5
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11 | 1z 9104 |
. . . . . . . 8
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12 | zltlen 9153 |
. . . . . . . 8
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13 | 3, 11, 12 | sylancl 410 |
. . . . . . 7
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14 | nn0lt10b 9155 |
. . . . . . . . . 10
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15 | 14 | biimpa 294 |
. . . . . . . . 9
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16 | 15 | orcd 723 |
. . . . . . . 8
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17 | 16 | ex 114 |
. . . . . . 7
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18 | 13, 17 | sylbird 169 |
. . . . . 6
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19 | 18 | expd 256 |
. . . . 5
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20 | 10, 19 | syl7bi 164 |
. . . 4
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21 | 9, 20 | sylbid 149 |
. . 3
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22 | 21 | imp 123 |
. 2
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23 | zdceq 9150 |
. . . . 5
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24 | 3, 11, 23 | sylancl 410 |
. . . 4
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
25 | 24 | adantr 274 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
26 | dcne 2320 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
27 | 25, 26 | sylib 121 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
28 | 2, 22, 27 | mpjaod 708 |
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 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-13 1492 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 ax-un 4363 ax-setind 4460 ax-cnex 7735 ax-resscn 7736 ax-1cn 7737 ax-1re 7738 ax-icn 7739 ax-addcl 7740 ax-addrcl 7741 ax-mulcl 7742 ax-mulrcl 7743 ax-addcom 7744 ax-mulcom 7745 ax-addass 7746 ax-mulass 7747 ax-distr 7748 ax-i2m1 7749 ax-0lt1 7750 ax-1rid 7751 ax-0id 7752 ax-rnegex 7753 ax-precex 7754 ax-cnre 7755 ax-pre-ltirr 7756 ax-pre-ltwlin 7757 ax-pre-lttrn 7758 ax-pre-apti 7759 ax-pre-ltadd 7760 ax-pre-mulgt0 7761 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ne 2310 df-nel 2405 df-ral 2422 df-rex 2423 df-reu 2424 df-rab 2426 df-v 2691 df-sbc 2914 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-int 3780 df-br 3938 df-opab 3998 df-id 4223 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-iota 5096 df-fun 5133 df-fv 5139 df-riota 5738 df-ov 5785 df-oprab 5786 df-mpo 5787 df-pnf 7826 df-mnf 7827 df-xr 7828 df-ltxr 7829 df-le 7830 df-sub 7959 df-neg 7960 df-reap 8361 df-ap 8368 df-inn 8745 df-2 8803 df-n0 9002 df-z 9079 |
This theorem is referenced by: (None) |
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