In this paper, we prove that [GRAPHICS] [GRAPHICS] [GRAPHICS] where L(pi/sigma, m) denotes the space of cardinal splines of degree m with nodes {[nu + 1/2(m - 1)h]}(j is an element of Z), and E(sigma) denotes the restriction to the real line R of entire functions of exponential type sigma. From this connection, we solve two extremal problems of some fundamental classes of functions defined of R. (C) 1996 Academic Press, Inc. [References: 18]
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