The upper R upper O left parenthesis script upper K right parenthesis R O ( K ) RO(K)-graded homotopy of Klein-four normed Mackey functors

We compute the upper R upper O left parenthesis script upper K right parenthesis R O ( K ) RO(K) -graded coefficients of the equivariant Eilenberg–Mac Lane spectrum associated with various Hill–Hopkins–Ravenel norms of the constant- double struck upper F 2 F 2 F₂ Mackey functor, where script upper K K K is the Klein-four group. Further, we analyse the multiplicative structure of these RO left parenthesis script upper K right parenthesis RO ( K ) RO(K) -graded Tambara functors.