Description: Absolute value is nonnegative. (Contributed by NM, 2-Aug-1999)
Ref | Expression | ||
---|---|---|---|
Hypothesis | absvalsqi.1 | |- A e. CC |
|
Assertion | absge0i | |- 0 <_ ( abs ` A ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | absvalsqi.1 | |- A e. CC |
|
2 | absge0 | |- ( A e. CC -> 0 <_ ( abs ` A ) ) |
|
3 | 1 2 | ax-mp | |- 0 <_ ( abs ` A ) |