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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 8318 |
. 2
| |
| 2 | rexr 8318 |
. 2
| |
| 3 | xrlenlt 8337 |
. 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 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2814 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-br 4109 df-opab 4171 df-xp 4754 df-cnv 4756 df-xr 8311 df-le 8313 |
| This theorem is referenced by: letri3 8353 ltleletr 8354 letr 8355 leid 8356 eqlelt 8359 ltle 8360 lelttr 8361 ltletr 8362 lenlti 8373 lenltd 8390 lemul1 8866 msqge0 8889 mulge0 8892 ltleap 8905 recgt0 9123 lediv1 9142 dfinfre 9229 nnge1 9259 nnnlt1 9262 avgle1 9478 avgle2 9479 nn0nlt0 9521 zltnle 9622 zleloe 9623 zdcle 9653 recnz 9670 btwnnz 9671 prime 9676 fznlem 10374 nelfzo 10485 fzonlt0 10502 qltnle 10602 bcval4 11113 ccatsymb 11286 swrd0g 11348 resqrexlemgt0 11701 climge0 12006 infpnlem1 13053 efle 15633 logleb 15732 cxple 15774 cxple3 15778 lgsval2lem 15875 lgsneg 15889 lgsdilem 15892 gausslemma2dlem1a 15923 gausslemma2dlem3 15928 supfz 16848 inffz 16849 |
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