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| Description: Addition of real numbers in terms of intermediate signed reals. |
| Ref | Expression |
|---|---|
| addresr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0r 5161 |
. . . 4
| |
| 2 | 1, 1 | pm3.2i 285 |
. . 3
|
| 3 | addcnsr 5225 |
. . . 4
| |
| 4 | 3 | an4s 507 |
. . 3
|
| 5 | 2, 4 | mpan2 694 |
. 2
|
| 6 | 0idsr 5178 |
. . . 4
| |
| 7 | 1, 6 | ax-mp 7 |
. . 3
|
| 8 | 7 | opeq2i 2482 |
. 2
|
| 9 | 5, 8 | syl6eq 1515 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: axaddrcl 5244 axrnegex 5255 axi2m1 5257 pre-axltadd 5261 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-9 962 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-rep 2683 ax-sep 2693 ax-nul 2700 ax-pow 2732 ax-pr 2769 ax-un 2857 ax-inf2 4597 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 774 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-reu 1643 df-rab 1644 df-v 1803 df-sbc 1932 df-csb 1992 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-pss 2045 df-nul 2271 df-if 2352 df-pw 2392 df-sn 2402 df-pr 2403 df-tp 2405 df-op 2406 df-uni 2494 df-int 2524 df-iun 2558 df-br 2610 df-opab 2657 df-tr 2671 df-eprel 2821 df-id 2824 df-po 2831 df-so 2841 df-fr 2907 df-we 2924 df-ord 2941 df-on 2942 df-lim 2943 df-suc 2944 df-om 3122 df-xp 3174 df-rel 3175 df-cnv 3176 df-co 3177 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fun 3182 df-fn 3183 df-f 3184 df-fv 3188 df-rdg 3917 df-opr 3950 df-oprab 3951 df-1st 4063 df-2nd 4064 df-1o 4117 df-oadd 4119 df-omul 4120 df-er 4245 df-ec 4247 df-qs 4250 df-ni 4972 df-pli 4973 df-mi 4974 df-lti 4975 df-plpq 5007 df-mpq 5008 df-enq 5009 df-nq 5010 df-plq 5011 df-mq 5012 df-rq 5013 df-ltq 5014 df-1q 5015 df-np 5058 df-1p 5059 df-plp 5060 df-ltp 5062 df-plpr 5136 df-enr 5138 df-nr 5139 df-plr 5140 df-0r 5143 df-c 5212 df-plus 5217 |