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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 9655 | . 2 ⊢ ;𝐴𝐵 = (((9 + 1) · 𝐴) + 𝐵) | |
| 2 | 9p1e10 9656 | . . . 4 ⊢ (9 + 1) = ;10 | |
| 3 | 2 | oveq1i 6038 | . . 3 ⊢ ((9 + 1) · 𝐴) = (;10 · 𝐴) |
| 4 | 3 | oveq1i 6038 | . 2 ⊢ (((9 + 1) · 𝐴) + 𝐵) = ((;10 · 𝐴) + 𝐵) |
| 5 | 1, 4 | eqtri 2252 | 1 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 (class class class)co 6028 0cc0 8075 1c1 8076 + caddc 8078 · cmul 8080 9c9 9244 ;cdc 9654 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 ax-sep 4212 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-1rid 8182 ax-0id 8183 ax-cnre 8186 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-iota 5293 df-fv 5341 df-ov 6031 df-inn 9187 df-2 9245 df-3 9246 df-4 9247 df-5 9248 df-6 9249 df-7 9250 df-8 9251 df-9 9252 df-dec 9655 |
| This theorem is referenced by: decnncl 9673 dec0u 9674 dec0h 9675 decnncl2 9677 declt 9681 decltc 9682 decsuc 9684 decle 9687 declti 9691 decsucc 9694 dec10p 9696 decma 9704 decmac 9705 decma2c 9706 decadd 9707 decaddc 9708 decsubi 9716 decmul1 9717 decmul1c 9718 decmul2c 9719 decmul10add 9722 5t5e25 9756 6t6e36 9761 8t6e48 9772 9t11e99 9783 3dec 11020 3dvdsdec 12487 dec2dvds 13045 dec5dvds 13046 dec5nprm 13048 dec2nprm 13049 decsplit1 13062 decsplit 13063 |
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