ABSTRACT
In an interesting development, Hida, Obata, and Saitô have introduced in [60] integral kernel operators of the form ∫ T j + k θ ( s 1 , … , s j , t 1 , … , t k ) ∂ s 1 * ⋅ ⋅ ⋅ ∂ s j * ∂ t 1 ⋅ ⋅ ⋅ ∂ t k d s 1 ⋅ ⋅ ⋅ d s j d t 1 ⋅ ⋅ ⋅ d t k , https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203733813/e9279b26-91e9-40dd-8029-b908c0f36f6c/content/eq1817.tif"/>
