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Theory and Modern Applications

Table 2 Global dynamics of system (1)–(2) summarized from Sects. 3, 4, and 5

From: Rich dynamics of a Filippov avian-only influenza model with a nonsmooth separation line

Case

Condition

Equilibrium

Main result

\(S_{1}^{*}< S_{2}^{*}<\frac{I_{T}}{\xi }\)

\(I_{T}< I_{2}^{*}< I_{1}^{*}\)

\(E_{1}^{V}, E_{2}^{R}\)

(II)

\(S_{1}^{*}< S_{2}^{*}<\frac{I_{T}}{\xi }\)

\(I_{2}^{*}< I_{T}< I_{1}^{*}\)

\(E_{1}^{V}, E_{2}^{V}, E_{p1}\)

(III)

\(S_{1}^{*}< S_{2}^{*}<\frac{I_{T}}{\xi }\)

\(I_{2}^{*}< I_{1}^{*}< I_{T}\)

\(E_{1}^{R}, E_{2}^{V}\)

(I)

\(S_{1}^{*}<\frac{I_{T}}{\xi }<S_{2}^{*}\)

\(I_{T}< I_{2}^{*}< I_{1}^{*}, \xi <\frac{I_{2}^{*}}{S_{2}^{*}}\)

\(E_{1}^{V}, E_{2}^{R}\)

(II)

\(S_{1}^{*}<\frac{I_{T}}{\xi }<S_{2}^{*}\)

\(I_{T}< I_{2}^{*}< I_{1}^{*}, \xi >\frac{I_{2}^{*}}{S_{2}^{*}}\)

\(E_{1}^{V}, E_{2}^{V}, E_{p2}\)

(III)

\(S_{1}^{*}<\frac{I_{T}}{\xi }<S_{2}^{*}\)

\(I_{2}^{*}< I_{T}< I_{1}^{*}, \xi < H_{1}\)

\(E_{1}^{V}, E_{2}^{V}, E_{p1}\)

(III)

\(S_{1}^{*}<\frac{I_{T}}{\xi }<S_{2}^{*}\)

\(I_{2}^{*}< I_{T}< I_{1}^{*}, \xi >H_{1}\)

\(E_{1}^{V}, E_{2}^{V}, E_{p2}\)

(III)

\(S_{1}^{*}<\frac{I_{T}}{\xi }<S_{2}^{*}\)

\(I_{2}^{*}< I_{1}^{*}< I_{T}\)

\(E_{1}^{R}, E_{2}^{V}\)

(I)

\(\frac{I_{T}}{\xi }< S_{1}^{*}< S_{2}^{*}\)

\(I_{T}< I_{2}^{*}< I_{1}^{*}, \xi <\frac{I_{2}^{*}}{S_{2}^{*}}\)

\(E_{1}^{V}, E_{2}^{R}\)

(II)

\(\frac{I_{T}}{\xi }< S_{1}^{*}< S_{2}^{*}\)

\(I_{T}< I_{2}^{*}< I_{1}^{*}, \frac{I_{2}^{*}}{S_{2}^{*}}<\xi <\frac{I_{1}^{*}}{S_{1}^{*}}\)

\(E_{1}^{V}, E_{2}^{V},E_{p2}\)

(III)

\(\frac{I_{T}}{\xi }< S_{1}^{*}< S_{2}^{*}\)

\(I_{T}< I_{2}^{*}< I_{1}^{*}, \xi >\frac{I_{1}^{*}}{S_{1}^{*}}\)

\(E_{1}^{R}, E_{2}^{V}\)

(I)

\(\frac{I_{T}}{\xi }< S_{1}^{*}< S_{2}^{*}\)

\(I_{2}^{*}< I_{T}< I_{1}^{*}, \xi <\frac{I_{1}^{*}}{S_{1}^{*}}\)

\(E_{1}^{V}, E_{2}^{V}, E_{p2}\)

(III)

\(\frac{I_{T}}{\xi }< S_{1}^{*}< S_{2}^{*}\)

\(I_{2}^{*}< I_{T}< I_{1}^{*}, \xi >\frac{I_{1}^{*}}{S_{1}^{*}}\)

\(E_{1}^{R}, E_{2}^{V}\)

(I)

\(\frac{I_{T}}{\xi }< S_{1}^{*}< S_{2}^{*}\)

\(I_{2}^{*}< I_{1}^{*}< I_{T}\)

\(E_{1}^{R}, E_{2}^{V}\)

(I)