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| Mirrors > Home > ILE Home > Th. List > lenlt | Unicode version | ||
| Description: 'Less than or equal to' expressed in terms of 'less than'. Part of definition 11.2.7(vi) of [HoTT], p. (varies). (Contributed by NM, 13-May-1999.) |
| Ref | Expression |
|---|---|
| lenlt |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rexr 8335 |
. 2
| |
| 2 | rexr 8335 |
. 2
| |
| 3 | xrlenlt 8354 |
. 2
| |
| 4 | 1, 2, 3 | syl2an 289 |
1
|
| 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 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-br 4115 df-opab 4177 df-xp 4760 df-cnv 4762 df-xr 8328 df-le 8330 |
| This theorem is referenced by: letri3 8370 ltleletr 8371 letr 8372 leid 8373 eqlelt 8376 ltle 8377 lelttr 8378 ltletr 8379 lenlti 8390 lenltd 8407 lemul1 8884 msqge0 8907 mulge0 8910 ltleap 8923 recgt0 9141 lediv1 9160 dfinfre 9247 nnge1 9277 nnnlt1 9280 avgle1 9496 avgle2 9497 nn0nlt0 9539 zltnle 9640 zleloe 9641 zdcle 9671 recnz 9689 btwnnz 9690 prime 9695 fznlem 10395 nelfzo 10508 fzonlt0 10525 qltnle 10627 bcval4 11139 ccatsymb 11315 swrd0g 11377 resqrexlemgt0 11730 climge0 12035 infpnlem1 13082 efle 15753 logleb 15852 cxple 15894 cxple3 15898 lgsval2lem 15995 lgsneg 16009 lgsdilem 16012 gausslemma2dlem1a 16043 gausslemma2dlem3 16048 supfz 16969 inffz 16970 |
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