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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 8218 |
. 2
| |
| 2 | rexr 8218 |
. 2
| |
| 3 | xrlenlt 8237 |
. 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 4205 ax-pow 4262 ax-pr 4297 |
| 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 2802 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-br 4087 df-opab 4149 df-xp 4729 df-cnv 4731 df-xr 8211 df-le 8213 |
| This theorem is referenced by: letri3 8253 ltleletr 8254 letr 8255 leid 8256 eqlelt 8259 ltle 8260 lelttr 8261 ltletr 8262 lenlti 8273 lenltd 8290 lemul1 8766 msqge0 8789 mulge0 8792 ltleap 8805 recgt0 9023 lediv1 9042 dfinfre 9129 nnge1 9159 nnnlt1 9162 avgle1 9378 avgle2 9379 nn0nlt0 9421 zltnle 9518 zleloe 9519 zdcle 9549 recnz 9566 btwnnz 9567 prime 9572 fznlem 10269 nelfzo 10380 fzonlt0 10397 qltnle 10496 bcval4 11007 ccatsymb 11172 swrd0g 11234 resqrexlemgt0 11574 climge0 11879 infpnlem1 12925 efle 15493 logleb 15592 cxple 15634 cxple3 15638 lgsval2lem 15732 lgsneg 15746 lgsdilem 15749 gausslemma2dlem1a 15780 gausslemma2dlem3 15785 supfz 16625 inffz 16626 |
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