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Unified Theory of Recurrence Formulas. I

1950
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Progress of theoretical physics
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Introduction and Sumniary. Among several transcendental functions appearing in mathematical physics, those of Sturm-Liouville type may be {:alled. most distinguished. since many of the important properties such as .. orthogonality relation ", "normalization integral", .. asymptotic expansion II etc. are deduced in unified way from general standpoint, not relying upon special form of individual function. Now, such is lacked, in the literature, concerning the deduction of the important property:

doi:10.1143/ptp.3.168
fatcat:s6i3qz2i3ncz7cfn3s6pwofqy4