Let p∈(1,∞)\documentclass[12pt]{minimal}
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\begin{document}$$p\in (1,\infty )$$\end{document}, q∈[1,∞)\documentclass[12pt]{minimal}
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\begin{document}$$q\in [1,\infty )$$\end{document}, s∈Z+\documentclass[12pt]{minimal}
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\begin{document}$$s\in {\mathbb Z}_{+}$$\end{document}, α∈[0,∞)\documentclass[12pt]{minimal}
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\begin{document}$$\alpha \in [0,\infty )$$\end{document}, and X\documentclass[12pt]{minimal}
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\begin{document}$$\mathcal {X}$$\end{document} be Rn\documentclass[12pt]{minimal}
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\begin{document}$$\mathbb R^n$$\end{document} or a cube Q0⫋Rn\documentclass[12pt]{minimal}
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\begin{document}$$Q_0\subsetneqq \mathbb R^n$$\end{document}. In this article, the authors first introduce the local John–Nirenberg–Campanato space jn(p,q,s)α(X)\documentclass[12pt]{minimal}
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\begin{document}$$jn_{(p,q,s)_{\alpha }}(\mathcal {X})$$\end{document} and show that the localized Campanato space is the limit case of jn(p,q,s)α(X)\documentclass[12pt]{minimal}
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\begin{document}$$jn_{(p,q,s)_{\alpha }}(\mathcal {X})$$\end{document} as p→∞\documentclass[12pt]{minimal}
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\begin{document}$$p\rightarrow \infty $$\end{document}. By means of local atoms and the weak-∗\documentclass[12pt]{minimal}
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\begin{document}$$*$$\end{document} topology, the authors then introduce the local Hardy-kind space hk(p′,q′,s)α(X)\documentclass[12pt]{minimal}
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\begin{document}$$hk_{(p',q',s)_{\alpha }}(\mathcal {X})$$\end{document} which proves to be the predual space of jn(p,q,s)α(X)\documentclass[12pt]{minimal}
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\begin{document}$$jn_{(p,q,s)_{\alpha }}(\mathcal {X})$$\end{document}. Moreover, the authors prove the invariance of hk(p′,q′,s)α(X)\documentclass[12pt]{minimal}
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\begin{document}$$hk_{(p',q',s)_{\alpha }}(\mathcal {X})$$\end{document} with respect to q∈(1,p)\documentclass[12pt]{minimal}
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\begin{document}$$q\in (1,p)$$\end{document}, where p′\documentclass[12pt]{minimal}
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\begin{document}$$p'$$\end{document} or q′\documentclass[12pt]{minimal}
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\begin{document}$$q'$$\end{document} denotes the conjugate number of p or q, respectively. All these results are new even for the localized John–Nirenberg space.
