If f:T→\R and f is thought of as a column vector indexed by T, then Kf is simply the ordinary product of the matrix K and the vector f; the product is a colum...If f:T→\R and f is thought of as a column vector indexed by T, then Kf is simply the ordinary product of the matrix K and the vector f; the product is a column vector indexed by S: Kf(x)=∑y∈SK(x,y)f(y),x∈S Similarly, if f:S→\R and f is thought of as a row vector indexed by S, then fK is simple the ordinary product of the vector f and the matrix K; the product is a row vector…