Oscillations in a delay-logistic equation
Author:
K. Gopalsamy
Journal:
Quart. Appl. Math. 44 (1986), 447-461
MSC:
Primary 34K15; Secondary 92A15
DOI:
https://doi.org/10.1090/qam/860898
MathSciNet review:
860898
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Abstract: Sufficient conditions are derived for all nonconstant nonnegative solutions of the equations of the form \[ \frac {{dx\left ( t \right )}}{{dt}} = x\left ( t \right )\left \{ {a - \sum \limits _{j = 1}^n {{b_j}x\left ( {t - {\tau _j}} \right )} } \right \}\] and \[ \frac {{dx\left ( t \right )}}{{dt}} = x\left ( t \right )\left \{ {a - b\int _{ - \infty }^t {k\left ( {t - s} \right )x\left ( s \right )ds} } \right \}\] to be oscillatory about their respective positive steady states. The results are complementary to those in [15].
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V. I. Zubov, Mathematical methods for the study of automatic control, Pergamon, Oxford (1962)
R. Bellman and K. L. Cooke, Differential-difference equations, Academic Press, New York, 1963
R. D. Braddock and P. Van den Driessche, On a two lag differential delay equation, J. Aust. Math. Soc. Ser. B 24, 292–317 (1983)
S. N. Chow, Existence of periodic solutions of autonomous functional differential equations, J. Differential Equations 15, 350–378 (1974)
J. R. Claeyssen, Effect of delays on functional differential equations, J. Differential Equations 20, 404–440 (1976)
W. J. Cunningham, A nonlinear differential-difference equation of growth, Proc. Natl. Acad. Sci. U.S.A. 40, 708–713 (1954)
J. M. Cushing, Integrodifferential equations and delay models in population dynamics, Lecture notes in biomathematics, vol. 20, Springer-Verlag, Berlin, 1977
J. M. Cushing, Time delays in single species growth models, J. Math. Biol. 4, 257–264 (1977)
B. F. Dibrov, M. A. Levshits, and M. A. Volkenstein, Mathematical model of immune processes, J. Theor. Biol. 65, 609–631 (1977)
L. E. El’sgol’ts and S. B. Norkin, Introduction to the theory and application of differential equations with deviating arguments, Academic Press, New York, 1973
M. D. Fargue, Réductibilité des systemes hereditaires à des systemes dynamiques, C. R. Acad. Sci. Paris Ser. B. 277, 471–473 (1973)
A. C. Fowler, Linear and nonlinear instability of heat exchangers, J. Inst. Math. Appl. 22, 361–382 (1978)
A. A. Francis, I. H. Herron, and C. McCalla, Speculative demand with supply response lag, in Nonlinear systems and applications (V. Lakshmikantham, ed.), pp. 603–610, Academic Press, New York, 1977
J. C. Friedly and V. S. Krishnan, Predictions of non-linear flow oscillations in boiling channels, AIChE Symp. Ser. 68, 127–135 (1974)
K. Gopalsamy, Stability, instability, oscillation and nonoscillation in scalar integrodifferential systems, Bull. Aust. Math. Soc. 28, 233–246 (1983)
K. Gopalsamy, Nonoscillation in a delay-logistic equation, Quart. Appl. Math. In press
K. Gopalsamy, Global asymptotic stability in Volterra’s population, J. Math. Biol. 19 157–168 (1984)
F. S. Grodins, J. Buell, and A. J. Bart, Mathematical analysis and digital simulation of the respiratory control system, J. Appl. Physiol. 22, 260–276 (1967)
K. P. Hadeler and J. Tomiuk, Periodic solutions of functional differential equations, Arch. Rat. Mech. Anal. 65 87–95 (1977)
J. K. Hale, Nonlinear oscillations in equations with delays, Lect. Appl. Math. 17 (1979)
U. an der Heiden, Analysis of neural networks, Lect. Notes Biomath. 35, Springer-Verlag, Berlin-Heidelberg-New York (1980)
E. Hewitt and K. Stromberg, Real and abstract analysis, Springer-Verlag, Berlin-Heidelberg-New York, 1965
G. E. Hutchinson, Circular causal systems in ecology, Ann. N. Y. Acad. Sci. 50, 221–240 (1948)
G. S. Jones, On the nonlinear differential-difference equation $f’\left ( x \right ) = - \alpha f\left ( {x - 1} \right )\left [ {1 + f\left ( x \right )} \right ]$, J. Math. Anal. Appl. 4, 440–469 (1962)
G. S. Jones, The existence of periodic solutions of $f’\left ( x \right ) = - \alpha f\left ( {x - 1} \right )\left [ {1 + f\left ( x \right )} \right ]$, J. Math. Anal. Appl. 5, 435–450 (1962)
S. Kakutani and L. Markus, On the nonlinear difference-differential equation $y’\left ( t \right ) = \left [ {A - By\left ( {t - \tau } \right )} \right ]y\left ( t \right )$, in Contributions to the theory of nonlinear oscillations, IV, Annals of Mathematics Study 41, Princeton Univ. Press, Princeton, N. J. (1958)
R. L. Kitching, Time, resources and population dynamics in insects, Aust. J. Ecol. 2, 31–42 (1977)
J. J. Levin, Boundedness and oscillation of some Volterra and delay equations, J. Differential Equations 5, 369–398 (1969)
N. MacDonald, Time lags in biological models, Lect. Notes Bio-math. 27, Springer-Verlag, Berlin (1978)
M. C. Mackey and L. Glass, Oscillations and chaos in physiological control systems, Science 197, 287–289 (1977)
R. M. May, Stability and complexity in model ecosystems, Princeton Univ. Press, Princeton, N. J., 1973
J. Maynard Smith, Models in ecology, Cambridge Univ. Press, 1974
R. K. Miller, Nonlinear Volterra integral equations, Benjamin, Menlo Park, 1971
A. D. Myschkis, Lineare differentialgleichungen mit nacheilendem argument, Deutscher Verlag der Wissenschaften, Berlin, 1955
R. D. Nussbaum, Differential delay equations with two time lags, Mem. Amer. Math. Soc. No. 205, 16, 1–62 (1975)
E. C. Pielou, An introduction to mathematical ecology, Wiley, New York, 1969
J. F. Perez, C. P. Malta, and F. A. B. Coutinho, Qualitative analysis of oscillations in isolated populations of flies, J. Theor. Biol. 71, 505–514 (1978)
H. Stech, The effect of time lags on the stability of the equilibrium state of a population growth equation, J. Math. Biol. 5 115–130 (1978)
H. Stech, The Hopf-bifurcation: a stability result and application, J. Math. Anal. Appl. 71, 525–546 (1979)
C. E. Taylor and R. R. Sokol, Oscillations in housefly population sizes due to time lags, Ecology 57, 1060–1067 (1976)
G. C. Walter, Delay differential equation models for fisheries, J. Fish. Res. Bd, Can. 30, 930–945 (1973)
P. Waltman, Deterministic threshold models in the theory of epidemics, Lect. Notes Biomath. 1, Springer-Verlag, Berlin-Heidelberg-New York (1974)
P. J. Wangersky and W. J. Cunningham, Time lag in population models, Cold Spring Harbor Symp. Quant. Biol. 22, 329–338 (1957)
E. M. Wright, A nonlinear difference-differential equation, J Reine Angew. Math. 194, 66–87 (1955)
V. I. Zubov, Mathematical methods for the study of automatic control, Pergamon, Oxford (1962)
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