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- W3087195930 abstract "Abstract We establish the existence and uniqueness of global (in time) positive strong solutions for a generalized population dynamics equation with environmental noise, while the global existence fails for the deterministic equation. Particularly, we prove the global existence of positive strong solutions for the following stochastic differential equation d X t = ( θ X t m 0 + k X t m ) d t + e X t m + 1 2 φ ( X t ) d W t , t > 0 , X t > 0 , m > m 0 ⩾ 1 , X 0 = x > 0 , with θ , k , e ∈ R being constants and φ ( r ) = r ϑ or | log ( r ) | ϑ ( ϑ > 0 ) , and we also show that the index ϑ > 0 is sharp in the sense that if ϑ = 0 , one can choose certain proper constants θ , k and e such that the solution X t will explode in a finite time almost surely." @default.
- W3087195930 created "2020-09-25" @default.
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- W3087195930 date "2021-01-01" @default.
- W3087195930 modified "2023-10-17" @default.
- W3087195930 title "On a generalized population dynamics equation with environmental noise" @default.
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- W3087195930 doi "https://doi.org/10.1016/j.spl.2020.108944" @default.
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