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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 9611 | . 2 ⊢ ;𝐴𝐵 = (((9 + 1) · 𝐴) + 𝐵) | |
| 2 | 9p1e10 9612 | . . . 4 ⊢ (9 + 1) = ;10 | |
| 3 | 2 | oveq1i 6027 | . . 3 ⊢ ((9 + 1) · 𝐴) = (;10 · 𝐴) |
| 4 | 3 | oveq1i 6027 | . 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 1397 (class class class)co 6017 0cc0 8031 1c1 8032 + caddc 8034 · cmul 8036 9c9 9200 ;cdc 9610 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-sep 4207 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-1rid 8138 ax-0id 8139 ax-cnre 8142 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6020 df-inn 9143 df-2 9201 df-3 9202 df-4 9203 df-5 9204 df-6 9205 df-7 9206 df-8 9207 df-9 9208 df-dec 9611 |
| This theorem is referenced by: decnncl 9629 dec0u 9630 dec0h 9631 decnncl2 9633 declt 9637 decltc 9638 decsuc 9640 decle 9643 declti 9647 decsucc 9650 dec10p 9652 decma 9660 decmac 9661 decma2c 9662 decadd 9663 decaddc 9664 decsubi 9672 decmul1 9673 decmul1c 9674 decmul2c 9675 decmul10add 9678 5t5e25 9712 6t6e36 9717 8t6e48 9728 9t11e99 9739 3dec 10975 3dvdsdec 12425 dec2dvds 12983 dec5dvds 12984 dec5nprm 12986 dec2nprm 12987 decsplit1 13000 decsplit 13001 |
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