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Figure 8: Nucleon symmetry energies of $(n\mathrm{,}p\mathrm{,}e)$, ($n\mathrm{,}p\mathrm{,}{\mathrm{\Sigma }}^{-}\mathrm{,}e$), and ($n\mathrm{,}p\mathrm{,}\mathrm{\Lambda }\mathrm{,}e$) are shown with the solid, doted, and dot-dashed lines, respectively. The ratios of hyperon coupling constants are $r_{{\mathrm{\Sigma }}^{-}N}^{\sigma }=1.0$ and $r_{\mathrm{\Lambda }N}^{\sigma }=1.0$. The discontinuity of symmetry energy, ($n\mathrm{,}p\mathrm{,}{\mathrm{\Sigma }}^{-}\mathrm{,}e$), occurs at ${\rho }_B/{\rho }_0~3.641$, because of the phase transition from ($n\mathrm{,}p\mathrm{,}{\mathrm{\Sigma }}^{-}\mathrm{,}e$) to ($n\mathrm{,}p\mathrm{,}{\mathrm{\Sigma }}^{-}$).