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Related theorems Unicode version |
| Description: Domain of multiplication on positive integers. |
| Ref | Expression |
|---|---|
| dmmulpi |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmres 3380 |
. . 3
| |
| 2 | fnom 4149 |
. . . . 5
| |
| 3 | fndm 3587 |
. . . . 5
| |
| 4 | 2, 3 | ax-mp 7 |
. . . 4
|
| 5 | 4 | ineq2i 2214 |
. . 3
|
| 6 | 1, 5 | eqtr 1495 |
. 2
|
| 7 | df-mi 5002 |
. . 3
| |
| 8 | 7 | dmeqi 3312 |
. 2
|
| 9 | df-ni 5000 |
. . . . . . 7
| |
| 10 | difss 2167 |
. . . . . . 7
| |
| 11 | 9, 10 | eqsstr 2091 |
. . . . . 6
|
| 12 | omsson 3136 |
. . . . . 6
| |
| 13 | 11, 12 | sstri 2073 |
. . . . 5
|
| 14 | anidm 432 |
. . . . 5
| |
| 15 | 13, 14 | mpbir 190 |
. . . 4
|
| 16 | ssxp 3256 |
. . . 4
| |
| 17 | 15, 16 | ax-mp 7 |
. . 3
|
| 18 | dfss 2054 |
. . 3
| |
| 19 | 17, 18 | mpbi 189 |
. 2
|
| 20 | 6, 8, 19 | 3eqtr4 1505 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: mulcompi 5024 mulasspi 5025 distrpi 5026 mulcanpi 5027 ltmpi 5031 ordpipq 5056 ltsopq 5075 |
| 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-sep 2703 ax-nul 2710 ax-pow 2742 ax-pr 2779 ax-un 2866 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 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-v 1812 df-sbc 1942 df-csb 2002 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-br 2620 df-opab 2667 df-tr 2681 df-id 2835 df-po 2840 df-so 2850 df-fr 2917 df-we 2934 df-ord 2951 df-on 2952 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-oprab 3966 df-1st 4079 df-2nd 4080 df-omul 4136 df-ni 5000 df-mi 5002 |