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| Mirrors > Home > ILE Home > Th. List > ltnri | Unicode version | ||
| Description: 'Less than' is irreflexive. (Contributed by NM, 18-Aug-1999.) | 
| Ref | Expression | 
|---|---|
| lt.1 | 
 | 
| Ref | Expression | 
|---|---|
| ltnri | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | lt.1 | 
. 2
 | |
| 2 | ltnr 8103 | 
. 2
 | |
| 3 | 1, 2 | ax-mp 5 | 
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 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 ax-cnex 7970 ax-resscn 7971 ax-pre-ltirr 7991 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-opab 4095 df-xp 4669 df-pnf 8063 df-mnf 8064 df-ltxr 8066 | 
| This theorem is referenced by: lt0ne0d 8540 sup3exmid 8984 elnnnn0b 9293 0nrp 9764 xposdif 9957 exmidunben 12643 pilem3 15019 coseq0q4123 15070 gausslemma2dlem0i 15298 | 
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