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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 9602 | . 2 ⊢ ;𝐴𝐵 = (((9 + 1) · 𝐴) + 𝐵) | |
| 2 | 9p1e10 9603 | . . . 4 ⊢ (9 + 1) = ;10 | |
| 3 | 2 | oveq1i 6023 | . . 3 ⊢ ((9 + 1) · 𝐴) = (;10 · 𝐴) |
| 4 | 3 | oveq1i 6023 | . 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 6013 0cc0 8022 1c1 8023 + caddc 8025 · cmul 8027 9c9 9191 ;cdc 9601 |
| 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 4205 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-mulcom 8123 ax-addass 8124 ax-mulass 8125 ax-distr 8126 ax-1rid 8129 ax-0id 8130 ax-cnre 8133 |
| 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 2802 df-un 3202 df-in 3204 df-ss 3211 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-br 4087 df-iota 5284 df-fv 5332 df-ov 6016 df-inn 9134 df-2 9192 df-3 9193 df-4 9194 df-5 9195 df-6 9196 df-7 9197 df-8 9198 df-9 9199 df-dec 9602 |
| This theorem is referenced by: decnncl 9620 dec0u 9621 dec0h 9622 decnncl2 9624 declt 9628 decltc 9629 decsuc 9631 decle 9634 declti 9638 decsucc 9641 dec10p 9643 decma 9651 decmac 9652 decma2c 9653 decadd 9654 decaddc 9655 decsubi 9663 decmul1 9664 decmul1c 9665 decmul2c 9666 decmul10add 9669 5t5e25 9703 6t6e36 9708 8t6e48 9719 9t11e99 9730 3dec 10966 3dvdsdec 12416 dec2dvds 12974 dec5dvds 12975 dec5nprm 12977 dec2nprm 12978 decsplit1 12991 decsplit 12992 |
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