numpy.signbit(x[, out]) = Returns element-wise True where signbit is set (less than zero).

numpy.real_if_close(a, tol=100)

numpy.conj(x[, out]) = Return the complex conjugate, element-wise. The complex conjugate of a complex number is obtained by

numpy.multiply(x1, x2[, out]) = Multiply arguments element-wise.

numpy.sign(x[, out]) = Returns an element-wise indication of the sign of a number. The

numpy.sinc(x)

numpy.arccosh(x[, out]) = Inverse hyperbolic cosine, element-wise.

numpy.reciprocal(x[, out]) = Return the reciprocal of the argument, element-wise. Calculates 1/x.

numpy.arccos(x[, out]) = Trigonometric inverse cosine, element-wise. The inverse of

numpy.convolve(a, v, mode='full')