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Mirrors > Home > ILE Home > Th. List > decmac | GIF version |
Description: Perform a multiply-add of two numerals 𝑀 and 𝑁 against a fixed multiplicand 𝑃 (with carry). (Contributed by Mario Carneiro, 18-Feb-2014.) (Revised by AV, 6-Sep-2021.) |
Ref | Expression |
---|---|
decma.a | ⊢ 𝐴 ∈ ℕ0 |
decma.b | ⊢ 𝐵 ∈ ℕ0 |
decma.c | ⊢ 𝐶 ∈ ℕ0 |
decma.d | ⊢ 𝐷 ∈ ℕ0 |
decma.m | ⊢ 𝑀 = ;𝐴𝐵 |
decma.n | ⊢ 𝑁 = ;𝐶𝐷 |
decmac.p | ⊢ 𝑃 ∈ ℕ0 |
decmac.f | ⊢ 𝐹 ∈ ℕ0 |
decmac.g | ⊢ 𝐺 ∈ ℕ0 |
decmac.e | ⊢ ((𝐴 · 𝑃) + (𝐶 + 𝐺)) = 𝐸 |
decmac.2 | ⊢ ((𝐵 · 𝑃) + 𝐷) = ;𝐺𝐹 |
Ref | Expression |
---|---|
decmac | ⊢ ((𝑀 · 𝑃) + 𝑁) = ;𝐸𝐹 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 10nn0 9360 | . . 3 ⊢ ;10 ∈ ℕ0 | |
2 | decma.a | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
3 | decma.b | . . 3 ⊢ 𝐵 ∈ ℕ0 | |
4 | decma.c | . . 3 ⊢ 𝐶 ∈ ℕ0 | |
5 | decma.d | . . 3 ⊢ 𝐷 ∈ ℕ0 | |
6 | decma.m | . . . 4 ⊢ 𝑀 = ;𝐴𝐵 | |
7 | dfdec10 9346 | . . . 4 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
8 | 6, 7 | eqtri 2191 | . . 3 ⊢ 𝑀 = ((;10 · 𝐴) + 𝐵) |
9 | decma.n | . . . 4 ⊢ 𝑁 = ;𝐶𝐷 | |
10 | dfdec10 9346 | . . . 4 ⊢ ;𝐶𝐷 = ((;10 · 𝐶) + 𝐷) | |
11 | 9, 10 | eqtri 2191 | . . 3 ⊢ 𝑁 = ((;10 · 𝐶) + 𝐷) |
12 | decmac.p | . . 3 ⊢ 𝑃 ∈ ℕ0 | |
13 | decmac.f | . . 3 ⊢ 𝐹 ∈ ℕ0 | |
14 | decmac.g | . . 3 ⊢ 𝐺 ∈ ℕ0 | |
15 | decmac.e | . . 3 ⊢ ((𝐴 · 𝑃) + (𝐶 + 𝐺)) = 𝐸 | |
16 | decmac.2 | . . . 4 ⊢ ((𝐵 · 𝑃) + 𝐷) = ;𝐺𝐹 | |
17 | dfdec10 9346 | . . . 4 ⊢ ;𝐺𝐹 = ((;10 · 𝐺) + 𝐹) | |
18 | 16, 17 | eqtri 2191 | . . 3 ⊢ ((𝐵 · 𝑃) + 𝐷) = ((;10 · 𝐺) + 𝐹) |
19 | 1, 2, 3, 4, 5, 8, 11, 12, 13, 14, 15, 18 | nummac 9387 | . 2 ⊢ ((𝑀 · 𝑃) + 𝑁) = ((;10 · 𝐸) + 𝐹) |
20 | dfdec10 9346 | . 2 ⊢ ;𝐸𝐹 = ((;10 · 𝐸) + 𝐹) | |
21 | 19, 20 | eqtr4i 2194 | 1 ⊢ ((𝑀 · 𝑃) + 𝑁) = ;𝐸𝐹 |
Colors of variables: wff set class |
Syntax hints: = wceq 1348 ∈ wcel 2141 (class class class)co 5853 0cc0 7774 1c1 7775 + caddc 7777 · cmul 7779 ℕ0cn0 9135 ;cdc 9343 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-setind 4521 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-addcom 7874 ax-mulcom 7875 ax-addass 7876 ax-mulass 7877 ax-distr 7878 ax-i2m1 7879 ax-1rid 7881 ax-0id 7882 ax-rnegex 7883 ax-cnre 7885 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-br 3990 df-opab 4051 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-iota 5160 df-fun 5200 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-sub 8092 df-inn 8879 df-2 8937 df-3 8938 df-4 8939 df-5 8940 df-6 8941 df-7 8942 df-8 8943 df-9 8944 df-n0 9136 df-dec 9344 |
This theorem is referenced by: decrmac 9400 |
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