triqs.fit.fit.quadratic

triqs.fit.fit.quadratic = (<function <lambda>>, '$%f x^2 + %f x + %f$', (0, 1, 1))

Quadratic-model fitter \(y = a\,x^2 + b\,x + c\).

Triple (F, name, init_value_default) consumable by Fit:

• F – lambda X, a, b, c: (a * X + b) * X + c

• name – r"$%f x^2 + %f x + %f$"

• init_value_default – (0, 1, 1)