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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 8312 |
. . 3
| |
| 2 | recn 8312 |
. . 3
| |
| 3 | negsub 8574 |
. . 3
| |
| 4 | 1, 2, 3 | syl2an 289 |
. 2
|
| 5 | renegcl 8587 |
. . 3
| |
| 6 | readdcl 8305 |
. . 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 8271 ax-1cn 8272 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-addass 8281 ax-distr 8283 ax-i2m1 8284 ax-0id 8287 ax-rnegex 8288 ax-cnre 8290 |
| 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 8499 df-neg 8500 |
| This theorem is used by: peano2rem 8593 resubcld 8708 posdif 8783 lt2sub 8788 le2sub 8789 cju 9291 elz2 9716 difrp 10093 iooshf 10354 iccshftl 10398 lincmb01cmp 10405 uzsubsubfz 10452 difelfzle 10541 fzonmapblen 10599 eluzgtdifelfzo 10615 subfzo0 10661 modfzo0difsn 10832 expubnd 11033 absdiflt 11858 absdifle 11859 elicc4abs 11860 abssubge0 11868 abs2difabs 11874 maxabsle 11970 resin4p 12485 recos4p 12486 cos01bnd 12525 cos01gt0 12530 pythagtriplem12 13054 pythagtriplem14 13056 pythagtriplem16 13058 fldivp1 13127 bl2ioo 15651 ioo2bl 15652 ioo2blex 15653 blssioo 15654 dich0 15753 sincosq1sgn 15927 sincosq2sgn 15928 sincosq3sgn 15929 sincosq4sgn 15930 sinq12gt0 15931 cosq14gt0 15933 tangtx 15939 relogdiv 15971 logdivlti 15982 gausslemma2dlem1a 16177 redc0 17107 reap0 17108 |
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