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| Mirrors > Home > ILE Home > Th. List > resubcl | Unicode version | ||
| Description: Closure law for subtraction of reals. (Contributed by NM, 20-Jan-1997.) |
| Ref | Expression |
|---|---|
| resubcl |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | recn 8313 |
. . 3
| |
| 2 | recn 8313 |
. . 3
| |
| 3 | negsub 8576 |
. . 3
| |
| 4 | 1, 2, 3 | syl2an 289 |
. 2
|
| 5 | renegcl 8589 |
. . 3
| |
| 6 | readdcl 8306 |
. . 3
| |
| 7 | 5, 6 | sylan2 286 |
. 2
|
| 8 | 4, 7 | eqeltrrd 2316 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-setind 4684 ax-resscn 8272 ax-1cn 8273 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-addcom 8280 ax-addass 8282 ax-distr 8284 ax-i2m1 8285 ax-0id 8288 ax-rnegex 8289 ax-cnre 8291 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-iota 5337 df-fun 5379 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-sub 8501 df-neg 8502 |
| This theorem is used by: peano2rem 8595 resubcld 8710 posdif 8785 lt2sub 8790 le2sub 8791 cju 9294 elz2 9721 difrp 10104 iooshf 10365 iccshftl 10409 lincmb01cmp 10416 uzsubsubfz 10463 difelfzle 10552 fzonmapblen 10610 eluzgtdifelfzo 10626 subfzo0 10672 modfzo0difsn 10847 expubnd 11048 absdiflt 11875 absdifle 11876 elicc4abs 11877 abssubge0 11885 abs2difabs 11891 maxabsle 11987 resin4p 12504 recos4p 12505 cos01bnd 12544 cos01gt0 12549 pythagtriplem12 13077 pythagtriplem14 13079 pythagtriplem16 13081 fldivp1 13150 bl2ioo 15742 ioo2bl 15743 ioo2blex 15744 blssioo 15745 dich0 15844 sincosq1sgn 16019 sincosq2sgn 16020 sincosq3sgn 16021 sincosq4sgn 16022 sinq12gt0 16023 cosq14gt0 16025 tangtx 16031 relogdiv 16064 logdivlti 16075 ppiqub 16254 chtqub 16257 bposlem1 16272 bposlem6 16277 bposlem9 16280 gausslemma2dlem1a 16343 redc0 17274 reap0 17275 |
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