... reads¹

Mean fields (40) and reduced energy kernels (10) are traditionally denoted by the same symbol $h$, but should not be confused one with another.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.