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Mirrors > Home > ILE Home > Th. List > df-dec | Unicode version |
Description: Define the "decimal constructor", which is used to build up "decimal integers" or "numeric terms" in base . For example, ;;; ;;; ;;; 1kp2ke3k 13311. (Contributed by Mario Carneiro, 17-Apr-2015.) (Revised by AV, 1-Aug-2021.) |
Ref | Expression |
---|---|
df-dec | ; |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cA | . . 3 | |
2 | cB | . . 3 | |
3 | 1, 2 | cdc 9295 | . 2 ; |
4 | c9 8891 | . . . . 5 | |
5 | c1 7733 | . . . . 5 | |
6 | caddc 7735 | . . . . 5 | |
7 | 4, 5, 6 | co 5824 | . . . 4 |
8 | cmul 7737 | . . . 4 | |
9 | 7, 1, 8 | co 5824 | . . 3 |
10 | 9, 2, 6 | co 5824 | . 2 |
11 | 3, 10 | wceq 1335 | 1 ; |
Colors of variables: wff set class |
This definition is referenced by: 9p1e10 9297 dfdec10 9298 deceq1 9299 deceq2 9300 deccl 9309 |
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