Some new sequence spaces derived by the domain of the triple band matrix

Let λλ denote any of the classical spaces ℓ∞,c,c0ℓ∞,c,c0, and ℓpℓp of bounded, convergent, null, and absolutely pp-summable sequences, respectively, and let λ(B)λ(B) also be the domain of the triple band matrix B(r,s,t)B(r,s,t) in the sequence space λλ, where 1