Subramanian, N. & Misra, U. K. (2011). The v-invariant χ2 sequence spaces. TWMS Journal Of Applied And Engineering Mathematics, 1(2), 173-184.
Abstract
In this paper we define v? invariatness of a double sequence space of ? and examine the v? invariatness of the double sequence space of ?. Furthermore, we give duals of double sequence space of ?.