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| Mirrors > Home > ILE Home > Th. List > dfdec10 | GIF version | ||
| Description: Version of the definition of the "decimal constructor" using ;10 instead of the symbol 10. Of course, this statement cannot be used as definition, because it uses the "decimal constructor". (Contributed by AV, 1-Aug-2021.) |
| Ref | Expression |
|---|---|
| dfdec10 | ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-dec 9590 | . 2 ⊢ ;𝐴𝐵 = (((9 + 1) · 𝐴) + 𝐵) | |
| 2 | 9p1e10 9591 | . . . 4 ⊢ (9 + 1) = ;10 | |
| 3 | 2 | oveq1i 6017 | . . 3 ⊢ ((9 + 1) · 𝐴) = (;10 · 𝐴) |
| 4 | 3 | oveq1i 6017 | . 2 ⊢ (((9 + 1) · 𝐴) + 𝐵) = ((;10 · 𝐴) + 𝐵) |
| 5 | 1, 4 | eqtri 2250 | 1 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 (class class class)co 6007 0cc0 8010 1c1 8011 + caddc 8013 · cmul 8015 9c9 9179 ;cdc 9589 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-sep 4202 ax-cnex 8101 ax-resscn 8102 ax-1cn 8103 ax-1re 8104 ax-icn 8105 ax-addcl 8106 ax-addrcl 8107 ax-mulcl 8108 ax-mulcom 8111 ax-addass 8112 ax-mulass 8113 ax-distr 8114 ax-1rid 8117 ax-0id 8118 ax-cnre 8121 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-br 4084 df-iota 5278 df-fv 5326 df-ov 6010 df-inn 9122 df-2 9180 df-3 9181 df-4 9182 df-5 9183 df-6 9184 df-7 9185 df-8 9186 df-9 9187 df-dec 9590 |
| This theorem is referenced by: decnncl 9608 dec0u 9609 dec0h 9610 decnncl2 9612 declt 9616 decltc 9617 decsuc 9619 decle 9622 declti 9626 decsucc 9629 dec10p 9631 decma 9639 decmac 9640 decma2c 9641 decadd 9642 decaddc 9643 decsubi 9651 decmul1 9652 decmul1c 9653 decmul2c 9654 decmul10add 9657 5t5e25 9691 6t6e36 9696 8t6e48 9707 9t11e99 9718 3dec 10948 3dvdsdec 12391 dec2dvds 12949 dec5dvds 12950 dec5nprm 12952 dec2nprm 12953 decsplit1 12966 decsplit 12967 |
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