discriminant

discriminant englanniksi

1. An expression that gives information about the roots of a polynomial; for example, the expression ''D = b2 - 4ac'' determines whether the roots of the equation ''ax2 + bx + c = 0'' are real and distinct (''D'' > 0), real and equal (''D'' = 0) or complex (''D'' < 0).

2. The invariant (on the vector space of forms of degree ''d'' in ''n'' variables) that vanishes exactly when the corresponding hypersurface in P''n''-1 is singular.

3. Serving to discriminate.

4. (gerund of)

5. (l)

6. (inflection of)

7. (l)