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| Description: Positive integer multiplication in terms of ordinal multiplication. |
| Ref | Expression |
|---|---|
| mulpiord |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opelxpi 3217 |
. 2
| |
| 2 | fvres 3734 |
. . 3
| |
| 3 | df-opr 3965 |
. . . 4
| |
| 4 | df-mi 5002 |
. . . . 5
| |
| 5 | 4 | fveq1i 3725 |
. . . 4
|
| 6 | 3, 5 | eqtr 1495 |
. . 3
|
| 7 | df-opr 3965 |
. . 3
| |
| 8 | 2, 6, 7 | 3eqtr4g 1531 |
. 2
|
| 9 | 1, 8 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: mulidpi 5014 mulclpi 5021 mulcompi 5024 mulasspi 5025 distrpi 5026 mulcanpi 5027 ltmpi 5031 |
| 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-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-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 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-v 1812 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-xp 3184 df-rel 3185 df-cnv 3186 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fv 3198 df-opr 3965 df-mi 5002 |