Sikkema, P. C. Differential operators and differential equations of infinite order with constant coefficients. Researches in connection with integral functions of finite order. (English) Zbl 0051.34402 Groningen-Djakarta: P. Noordhoff N. V. 223 p. (1953). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 16 Documents Keywords:functional analysis PDF BibTeX XML OpenURL