In this paper, the concepts of infinite partial array languages (
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partial array languages) and the classes of
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partial array languages, namely, local
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partial array languages, Buchi local
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partial array languages, and Muller local
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partial array languages are defined, and their related properties are studied. Furthermore, we introduce nondeterministic finite online tessellation
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-automata on
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partial array languages. In addition, we prove that the class of all adherences of finite local partial array languages is equal to the class of all local
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partial array languages and also prove that every
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regular partial array language is a projection of Buchi local
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partial array language.