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Related theorems Unicode version |
| Description: Closure of multiplication of integers. |
| Ref | Expression |
|---|---|
| zmulclt |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0mulclt 6125 |
. . . . . . . . 9
| |
| 2 | 1 | orcd 272 |
. . . . . . . 8
|
| 3 | 2 | a1i 8 |
. . . . . . 7
|
| 4 | axmulrcl 5286 |
. . . . . . 7
| |
| 5 | 3, 4 | jctild 603 |
. . . . . 6
|
| 6 | mulneg1t 5463 |
. . . . . . . . . . 11
| |
| 7 | recnt 5325 |
. . . . . . . . . . 11
| |
| 8 | recnt 5325 |
. . . . . . . . . . 11
| |
| 9 | 6, 7, 8 | syl2an 456 |
. . . . . . . . . 10
|
| 10 | 9 | eleq1d 1543 |
. . . . . . . . 9
|
| 11 | nn0mulclt 6125 |
. . . . . . . . 9
| |
| 12 | 10, 11 | syl5bi 208 |
. . . . . . . 8
|
| 13 | olc 268 |
. . . . . . . 8
| |
| 14 | 12, 13 | syl6 22 |
. . . . . . 7
|
| 15 | 14, 4 | jctild 603 |
. . . . . 6
|
| 16 | mulneg2t 5464 |
. . . . . . . . . . 11
| |
| 17 | 16, 7, 8 | syl2an 456 |
. . . . . . . . . 10
|
| 18 | 17 | eleq1d 1543 |
. . . . . . . . 9
|
| 19 | nn0mulclt 6125 |
. . . . . . . . 9
| |
| 20 | 18, 19 | syl5bi 208 |
. . . . . . . 8
|
| 21 | 20, 13 | syl6 22 |
. . . . . . 7
|
| 22 | 21, 4 | jctild 603 |
. . . . . 6
|
| 23 | mul2negt 5466 |
. . . . . . . . . . 11
| |
| 24 | 23, 7, 8 | syl2an 456 |
. . . . . . . . . 10
|
| 25 | 24 | eleq1d 1543 |
. . . . . . . . 9
|
| 26 | nn0mulclt 6125 |
. . . . . . . . 9
| |
| 27 | 25, 26 | syl5bi 208 |
. . . . . . . 8
|
| 28 | orc 269 |
. . . . . . . 8
| |
| 29 | 27, 28 | syl6 22 |
. . . . . . 7
|
| 30 | 29, 4 | jctild 603 |
. . . . . 6
|
| 31 | 5, 15, 22, 30 | ccased 758 |
. . . . 5
|
| 32 | elznn0 6151 |
. . . . 5
| |
| 33 | 31, 32 | syl6ibr 213 |
. . . 4
|
| 34 | 33 | imp 350 |
. . 3
|
| 35 | 34 | an4s 510 |
. 2
|
| 36 | elznn0 6151 |
. 2
| |
| 37 | elznn0 6151 |
. 2
| |
| 38 | 35, 36, 37 | syl2anb 457 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: msqznn 6198 quoremz 6253 intfracq 6255 qaddclt 6270 qmulclt 6272 qrecclt 6274 zexpclt 6579 eirrlem2 7390 znnen 7503 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-9 967 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-rep 2698 ax-sep 2708 ax-nul 2715 ax-pow 2748 ax-pr 2785 ax-un 2872 ax-inf2 4634 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 778 df-3an 779 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-rex 1653 df-reu 1654 df-rab 1655 df-v 1815 df-sbc 1945 df-csb 2005 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-pss 2058 df-nul 2284 df-if 2366 df-pw 2406 df-sn 2416 df-pr 2417 df-tp 2419 df-op 2420 df-uni 2508 df-int 2538 df-iun 2572 df-br 2625 df-opab 2672 df-tr 2686 df-eprel 2838 df-id 2841 df-po 2846 df-so 2856 df-fr 2923 df-we 2940 df-ord 2957 df-on 2958 df-lim 2959 df-suc 2960 df-om 3138 df-xp 3190 df-rel 3191 df-cnv 3192 df-co 3193 df-dm 3194 df-rn 3195 df-res 3196 df-ima 3197 df-fun 3198 df-fn 3199 df-f 3200 df-fv 3204 df-rdg 3938 df-opr 3971 df-oprab 3972 df-1st 4085 df-2nd 4086 df-1o 4139 df-oadd 4141 df-omul 4142 df-er 4267 df-ec 4269 df-qs 4272 df-ni 5012 df-pli 5013 df-mi 5014 df-lti 5015 df-plpq 5047 df-mpq 5048 df-enq 5049 df-nq 5050 df-plq 5051 df-mq 5052 df-rq 5053 df-ltq 5054 df-1q 5055 df-np 5098 df-1p 5099 df-plp 5100 df-mp 5101 df-ltp 5102 df-plpr 5176 df-mpr 5177 df-enr 5178 df-nr 5179 df-plr 5180 df-mr 5181 df-ltr 5182 df-0r 5183 df-1r 5184 df-m1r 5185 df-c 5252 df-0 5253 df-1 5254 df-i 5255 df-r 5256 df-plus 5257 df-mul 5258 df-sub 5368 df-neg 5370 df-n 5927 df-n0 6102 df-z 6138 |