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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 8268 |
. 2
| |
| 2 | rexr 8268 |
. 2
| |
| 3 | xrlenlt 8287 |
. 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 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-br 4094 df-opab 4156 df-xp 4737 df-cnv 4739 df-xr 8261 df-le 8263 |
| This theorem is referenced by: letri3 8303 ltleletr 8304 letr 8305 leid 8306 eqlelt 8309 ltle 8310 lelttr 8311 ltletr 8312 lenlti 8323 lenltd 8340 lemul1 8816 msqge0 8839 mulge0 8842 ltleap 8855 recgt0 9073 lediv1 9092 dfinfre 9179 nnge1 9209 nnnlt1 9212 avgle1 9428 avgle2 9429 nn0nlt0 9471 zltnle 9568 zleloe 9569 zdcle 9599 recnz 9616 btwnnz 9617 prime 9622 fznlem 10319 nelfzo 10430 fzonlt0 10447 qltnle 10547 bcval4 11058 ccatsymb 11226 swrd0g 11288 resqrexlemgt0 11641 climge0 11946 infpnlem1 12993 efle 15567 logleb 15666 cxple 15708 cxple3 15712 lgsval2lem 15809 lgsneg 15823 lgsdilem 15826 gausslemma2dlem1a 15857 gausslemma2dlem3 15862 supfz 16784 inffz 16785 |
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