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| Mirrors > Home > ILE Home > Th. List > lensymd | Unicode version | ||
| Description: 'Less than or equal to' implies 'not less than'. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| ltd.1 |
|
| ltd.2 |
|
| lensymd.3 |
|
| Ref | Expression |
|---|---|
| lensymd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lensymd.3 |
. 2
| |
| 2 | ltd.1 |
. . 3
| |
| 3 | ltd.2 |
. . 3
| |
| 4 | 2, 3 | lenltd 8444 |
. 2
|
| 5 | 1, 4 | mpbid 147 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-br 4131 df-opab 4193 df-xp 4780 df-cnv 4782 df-xr 8364 df-le 8366 |
| This theorem is used by: lbinf 9278 suprzubdc 10671 zsupssdc 10673 addmodlteq 10835 iseqf1olemab 10939 seq3f1olemqsumk 10949 seq3f1olemqsum 10950 seqf1oglem1 10956 seqf1oglem2 10957 nn0ltexp2 11147 sshashneg 11281 zfz1isolemiso 11291 seq3coll 11294 ccatalpha 11381 sq01 11660 maxleim 11971 maxabslemval 11974 cvgratz 12299 divalglemnqt 12687 bezoutlemsup 12786 dfgcd2 12791 nninfctlemfo 12817 lcmgcdlem 12855 4sqlem11 13180 ballotfilemimin 13249 ballotfilemfrcn0 13273 gzsumfzval 13711 lgsval2lem 16129 trilpolemgt1 17088 trilpolemlt1 17090 |
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