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On a deficiency index theorem of W. N. Everitt

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Part of the Lecture Notes in Mathematics book series (LNM,volume 415)

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References

  1. A. Devinatz, Positive definite fourth-order differential operators, J. London Math. Soc. (2), 6(1973), 412–416.

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  2. W. D. Evans, On non-integrable square solutions of a fourth-order differential equation and the limit-2 classification, To appear in J. London Math. Soc.

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  3. W. N. Everitt, Some positive definite differential operators, J. London Math. Soc. 43 (1968), 465–473.

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  4. M. A. Naimark, Linear Differential Operators, GITTL, Moscow 1954; English transl. Ungar, New York, part I, 1967; part II, 1968.

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© 1974 Springer-Verlag

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Devinatz, A. (1974). On a deficiency index theorem of W. N. Everitt. In: Sleeman, B.D., Michael, I.M. (eds) Ordinary and Partial Differential Equations. Lecture Notes in Mathematics, vol 415. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0065515

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  • DOI: https://doi.org/10.1007/BFb0065515

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  • Online ISBN: 978-3-540-37264-6

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