June 1971
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5 Reads
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14 Citations
Journal of Computer and System Sciences
(1)If every set in ℒ is a subset of a* and the empty word belongs to one of them, then Figure optionsView in workspaceDownload full-size imageDownload as PowerPoint slide. One consequence is that Figure optionsView in workspaceDownload full-size imageDownload as PowerPoint slide is always principal for Figure optionsView in workspaceDownload full-size imageDownload as PowerPoint slide.(2)On the other hand, there is a language Figure optionsView in workspaceDownload full-size imageDownload as PowerPoint slide such that Figure optionsView in workspaceDownload full-size imageDownload as PowerPoint slide