(mathematics) A complex analytic function satisfying a certain kind of functional equation with respect to the group action of the modular group, and also satisfying a growth condition.

plural of cusp form

(mathematics) A kind of modular form with a zero constant coefficient in the Fourier series expansion.

plural of bound form

(mathematics, algebra) a quadratic equation in the form y=a(x-h)²+k

plural of vertex form

plural of form genus

(journalism) Alternative form of longform

(idiomatic) Performing very well.

plural of e-form