Description: 0 is an additive identity. (Contributed by NM, 23-Nov-1994) (Revised by Scott Fenton, 3-Jan-2013)
Ref | Expression | ||
---|---|---|---|
Hypothesis | mul.1 | |
|
Assertion | addid1i | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mul.1 | |
|
2 | addid1 | |
|
3 | 1 2 | ax-mp | |