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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 8318 |
. . 3
| |
| 2 | recn 8318 |
. . 3
| |
| 3 | negsub 8581 |
. . 3
| |
| 4 | 1, 2, 3 | syl2an 289 |
. 2
|
| 5 | renegcl 8594 |
. . 3
| |
| 6 | readdcl 8311 |
. . 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 4251 ax-pow 4313 ax-pr 4348 ax-setind 4686 ax-resscn 8277 ax-1cn 8278 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-addcom 8285 ax-addass 8287 ax-distr 8289 ax-i2m1 8290 ax-0id 8293 ax-rnegex 8294 ax-cnre 8296 |
| 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 4132 df-opab 4194 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-iota 5340 df-fun 5382 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-sub 8506 df-neg 8507 |
| This theorem is used by: peano2rem 8600 resubcld 8715 posdif 8790 lt2sub 8795 le2sub 8796 cju 9299 elz2 9725 difrp 10109 iooshf 10370 iccshftl 10414 lincmb01cmp 10421 uzsubsubfz 10468 difelfzle 10557 fzonmapblen 10615 eluzgtdifelfzo 10631 subfzo0 10677 modfzo0difsn 10852 expubnd 11053 absdiflt 11880 absdifle 11881 elicc4abs 11882 abssubge0 11890 abs2difabs 11896 maxabsle 11992 resin4p 12509 recos4p 12510 cos01bnd 12549 cos01gt0 12554 pythagtriplem12 13082 pythagtriplem14 13084 pythagtriplem16 13086 fldivp1 13155 bl2ioo 15793 ioo2bl 15794 ioo2blex 15795 blssioo 15796 dich0 15895 sincosq1sgn 16070 sincosq2sgn 16071 sincosq3sgn 16072 sincosq4sgn 16073 sinq12gt0 16074 cosq14gt0 16076 tangtx 16082 relogdiv 16117 logdivlti 16128 ppiqub 16310 chtqub 16313 bposlem1 16328 bposlem6 16333 bposlem9 16336 gausslemma2dlem1a 16399 redc0 17331 reap0 17332 |
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