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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 8208 |
. 2
| |
| 2 | rexr 8208 |
. 2
| |
| 3 | xrlenlt 8227 |
. 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-br 4084 df-opab 4146 df-xp 4726 df-cnv 4728 df-xr 8201 df-le 8203 |
| This theorem is referenced by: letri3 8243 ltleletr 8244 letr 8245 leid 8246 eqlelt 8249 ltle 8250 lelttr 8251 ltletr 8252 lenlti 8263 lenltd 8280 lemul1 8756 msqge0 8779 mulge0 8782 ltleap 8795 recgt0 9013 lediv1 9032 dfinfre 9119 nnge1 9149 nnnlt1 9152 avgle1 9368 avgle2 9369 nn0nlt0 9411 zltnle 9508 zleloe 9509 zdcle 9539 recnz 9556 btwnnz 9557 prime 9562 fznlem 10254 nelfzo 10365 fzonlt0 10382 qltnle 10480 bcval4 10991 ccatsymb 11155 swrd0g 11213 resqrexlemgt0 11552 climge0 11857 infpnlem1 12903 efle 15471 logleb 15570 cxple 15612 cxple3 15616 lgsval2lem 15710 lgsneg 15724 lgsdilem 15727 gausslemma2dlem1a 15758 gausslemma2dlem3 15763 supfz 16553 inffz 16554 |
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