![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
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 9452 | . 2 ⊢ ;𝐴𝐵 = (((9 + 1) · 𝐴) + 𝐵) | |
2 | 9p1e10 9453 | . . . 4 ⊢ (9 + 1) = ;10 | |
3 | 2 | oveq1i 5929 | . . 3 ⊢ ((9 + 1) · 𝐴) = (;10 · 𝐴) |
4 | 3 | oveq1i 5929 | . 2 ⊢ (((9 + 1) · 𝐴) + 𝐵) = ((;10 · 𝐴) + 𝐵) |
5 | 1, 4 | eqtri 2214 | 1 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) |
Colors of variables: wff set class |
Syntax hints: = wceq 1364 (class class class)co 5919 0cc0 7874 1c1 7875 + caddc 7877 · cmul 7879 9c9 9042 ;cdc 9451 |
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 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 ax-sep 4148 ax-cnex 7965 ax-resscn 7966 ax-1cn 7967 ax-1re 7968 ax-icn 7969 ax-addcl 7970 ax-addrcl 7971 ax-mulcl 7972 ax-mulcom 7975 ax-addass 7976 ax-mulass 7977 ax-distr 7978 ax-1rid 7981 ax-0id 7982 ax-cnre 7985 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-rab 2481 df-v 2762 df-un 3158 df-in 3160 df-ss 3167 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-int 3872 df-br 4031 df-iota 5216 df-fv 5263 df-ov 5922 df-inn 8985 df-2 9043 df-3 9044 df-4 9045 df-5 9046 df-6 9047 df-7 9048 df-8 9049 df-9 9050 df-dec 9452 |
This theorem is referenced by: decnncl 9470 dec0u 9471 dec0h 9472 decnncl2 9474 declt 9478 decltc 9479 decsuc 9481 decle 9484 declti 9488 decsucc 9491 dec10p 9493 decma 9501 decmac 9502 decma2c 9503 decadd 9504 decaddc 9505 decsubi 9513 decmul1 9514 decmul1c 9515 decmul2c 9516 decmul10add 9519 5t5e25 9553 6t6e36 9558 8t6e48 9569 9t11e99 9580 3dec 10788 3dvdsdec 12009 |
Copyright terms: Public domain | W3C validator |