QuadraticForm

An indefinite binary quadratic form $ax^2+bxy+cy^2$, carried by its coefficient triple.

QuadraticForm(a, b, c)the form $ax^2+bxy+cy^2$

Typed signatures

Type	Package	Applies
(integer, integer, integer) -> expression<QuadraticForm>	modular	always

Domain: The modular group

Examples

Basic #

$x^2+xy-y^2$ has discriminant $5$

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In$\mathrm{FormDiscriminant}(\mathrm{QuadraticForm}(1, 1, -1))$Out$5$

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Examples	1

See also: FormClassNumber, FormDiscriminant