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| Description: Closure of addition on signed reals. |
| Ref | Expression |
|---|---|
| addclsr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-nr 5167 |
. . 3
| |
| 2 | opreq1 3968 |
. . . 4
| |
| 3 | 2 | eleq1d 1540 |
. . 3
|
| 4 | opreq2 3969 |
. . . 4
| |
| 5 | 4 | eleq1d 1540 |
. . 3
|
| 6 | addsrpr 5184 |
. . . 4
| |
| 7 | addclpr 5120 |
. . . . . . 7
| |
| 8 | addclpr 5120 |
. . . . . . 7
| |
| 9 | 7, 8 | anim12i 333 |
. . . . . 6
|
| 10 | 9 | an4s 508 |
. . . . 5
|
| 11 | opelxpi 3217 |
. . . . 5
| |
| 12 | enrex 5178 |
. . . . . 6
| |
| 13 | 12 | ecelqsi 4292 |
. . . . 5
|
| 14 | 10, 11, 13 | 3syl 20 |
. . . 4
|
| 15 | 6, 14 | eqeltrd 1548 |
. . 3
|
| 16 | 1, 3, 5, 15 | 2ecoptocl 4304 |
. 2
|
| 17 | 16, 1 | syl6eleqr 1559 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dmaddsr 5194 supsrlem1 5225 supsrlem2 5226 axaddopr 5265 axmulopr 5266 axaddrcl 5272 axaddass 5277 axmulass 5278 axdistr 5279 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-9 965 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-rep 2693 ax-sep 2703 ax-nul 2710 ax-pow 2742 ax-pr 2779 ax-un 2866 ax-inf2 4625 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 776 df-3an 777 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-rex 1650 df-reu 1651 df-rab 1652 df-v 1812 df-sbc 1942 df-csb 2002 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-pss 2055 df-nul 2281 df-if 2362 df-pw 2402 df-sn 2412 df-pr 2413 df-tp 2415 df-op 2416 df-uni 2504 df-int 2534 df-iun 2568 df-br 2620 df-opab 2667 df-tr 2681 df-eprel 2832 df-id 2835 df-po 2840 df-so 2850 df-fr 2917 df-we 2934 df-ord 2951 df-on 2952 df-lim 2953 df-suc 2954 df-om 3132 df-xp 3184 df-rel 3185 df-cnv 3186 df-co 3187 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fun 3192 df-fn 3193 df-f 3194 df-fv 3198 df-rdg 3932 df-opr 3965 df-oprab 3966 df-1st 4079 df-2nd 4080 df-1o 4133 df-oadd 4135 df-omul 4136 df-er 4261 df-ec 4263 df-qs 4266 df-ni 5000 df-pli 5001 df-mi 5002 df-lti 5003 df-plpq 5035 df-mpq 5036 df-enq 5037 df-nq 5038 df-plq 5039 df-mq 5040 df-rq 5041 df-ltq 5042 df-1q 5043 df-np 5086 df-plp 5088 df-ltp 5090 df-plpr 5164 df-enr 5166 df-nr 5167 df-plr 5168 |