This option for the function fpt specifies that the convexity of the *F*-signature function and a secant line argument be used, in an attempt to narrow down the interval bounding the *F*-pure threshold. Only takes on Boolean values.

- fpt(..., UseFSignature => ...), see fpt -- attempts to compute the F-pure threshold of a polynomial at the origin

- fpt -- attempts to compute the F-pure threshold of a polynomial at the origin

The object UseFSignature is a symbol.