In this paper we first develop the rotation theorem of the Gaussian paths on Wiener space. We next analyze the generalized analytic Fourier–Feynman transform. As an application of our rotation theorem, we represent the multiple generalized analytic Fourier–Feynman transform as a single generalized Fourier–Feynman transform.
"Rotation of Gaussian paths on Wiener space with applications." Banach J. Math. Anal. 12 (3) 651 - 672, July 2018. https://doi.org/10.1215/17358787-2017-0057