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| Description: Relationship between subtraction and negative. Theorem I.3 of [Apostol] p. 18. |
| Ref | Expression |
|---|---|
| negsubt |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opreq1 3907 |
. . 3
| |
| 2 | opreq1 3907 |
. . 3
| |
| 3 | 1, 2 | eqeq12d 1465 |
. 2
|
| 4 | negeq 5282 |
. . . 4
| |
| 5 | 4 | opreq2d 3915 |
. . 3
|
| 6 | opreq2 3908 |
. . 3
| |
| 7 | 5, 6 | eqeq12d 1465 |
. 2
|
| 8 | 0cn 5251 |
. . . 4
| |
| 9 | 8 | elimel 2365 |
. . 3
|
| 10 | 8 | elimel 2365 |
. . 3
|
| 11 | 9, 10 | negsub 5304 |
. 2
|
| 12 | 3, 7, 11 | dedth2h 2358 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: addsubasst 5306 subnegt 5317 subcan2t 5325 subcant 5335 resubclt 5361 negdi2t 5379 negsubdit 5380 negsubdi2t 5381 submul2t 5383 subsub2t 5384 subsub4t 5387 nnncan1t 5390 addsub4t 5396 mulsubt 5400 pnncant 5403 lesub1t 5584 lesub2t 5585 ltsub1t 5586 ltsub2t 5587 subge0t 5598 divsubdirt 5682 zaddclt 6063 zsubclt 6066 zltp1let 6079 ceim1lt 6143 qsubclt 6161 icoshftf1oi 6293 fzsubelt 6384 seqzval2t 6436 resubt 6692 imsubt 6695 cjsubt 6702 recjt 6704 cjreimt 6714 cj11t 6716 absdifltt 6772 absdiflet 6773 fsumshftm 6921 climge0 7000 climsub 7017 clim2serzt 7021 clim2serz 7032 geolimilem 7121 efsubt 7264 efi4pt 7328 efmivalt 7341 sinsubt 7348 cossubt 7349 sincossqt 7354 demoivre 7377 vcsubdir 8062 cnnvm 8188 ipval2 8226 cnph 8344 ipasslem2 8357 ipsubdir 8374 shftefif1olem 8574 shftefif1olemOLD 8575 mslb1 8823 hvsubdistr2t 9066 his2subt 9107 lnfnsub 10104 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-4 951 ax-5 952 ax-6 953 ax-7 954 ax-gen 955 ax-8 1101 ax-9 1102 ax-10 1103 ax-12 1104 ax-13 1107 ax-14 1108 ax-11 1180 ax-17 1190 ax-16 1194 ax-11o 1202 ax-ext 1436 ax-rep 2661 ax-sep 2671 ax-nul 2678 ax-pow 2710 ax-pr 2747 ax-un 2830 ax-inf2 4549 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 773 df-3an 774 df-ex 957 df-sb 1155 df-eu 1359 df-mo 1360 df-clab 1441 df-cleq 1446 df-clel 1449 df-ne 1563 df-ral 1625 df-rex 1626 df-reu 1627 df-rab 1628 df-v 1787 df-sbc 1913 df-csb 1973 df-dif 2020 df-un 2021 df-in 2022 df-ss 2024 df-pss 2026 df-nul 2252 df-if 2333 df-pw 2373 df-sn 2383 df-pr 2384 df-tp 2386 df-op 2387 df-uni 2472 df-int 2502 df-iun 2536 df-br 2588 df-opab 2635 df-tr 2649 df-eprel 2794 df-id 2797 df-po 2804 df-so 2814 df-fr 2880 df-we 2897 df-ord 2914 df-on 2915 df-lim 2916 df-suc 2917 df-om 3095 df-xp 3147 df-rel 3148 df-cnv 3149 df-co 3150 df-dm 3151 df-rn 3152 df-res 3153 df-ima 3154 df-fun 3155 df-fn 3156 df-f 3157 df-fv 3161 df-rdg 3871 df-opr 3904 df-oprab 3905 df-1st 4017 df-2nd 4018 df-1o 4071 df-oadd 4073 df-omul 4074 df-er 4199 df-ec 4201 df-qs 4204 df-ni 4923 df-pli 4924 df-mi 4925 df-lti 4926 df-plpq 4958 df-mpq 4959 df-enq 4960 df-nq 4961 df-plq 4962 df-mq 4963 df-rq 4964 df-ltq 4965 df-1q 4966 df-np 5009 df-1p 5010 df-plp 5011 df-mp 5012 df-ltp 5013 df-plpr 5087 df-mpr 5088 df-enr 5089 df-nr 5090 df-plr 5091 df-mr 5092 df-0r 5094 df-1r 5095 df-m1r 5096 df-c 5163 df-0 5164 df-1 5165 df-i 5166 df-r 5167 df-plus 5168 df-mul 5169 df-sub 5279 df-neg 5281 |