Description: Define an algebraic integer as a complex number which is the root of a monic integer polynomial. (Contributed by Stefan O'Rear, 30-Nov-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | df-za | |- _ZZ = ( IntgOver ` ZZ ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
0 | cza | |- _ZZ |
|
1 | citgo | |- IntgOver |
|
2 | cz | |- ZZ |
|
3 | 2 1 | cfv | |- ( IntgOver ` ZZ ) |
4 | 0 3 | wceq | |- _ZZ = ( IntgOver ` ZZ ) |