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13th International Conference on Membrane Computing - MTA Sztaki

13th International Conference on Membrane Computing - MTA Sztaki

13th International Conference on Membrane Computing - MTA Sztaki

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<strong>Membrane</strong>s with local envir<strong>on</strong>ments<br />

– The last step is to give the approximati<strong>on</strong> pair of the space. These functi<strong>on</strong>s<br />

determine the lower and upper approximati<strong>on</strong>s of any mset of the domain.<br />

Definiti<strong>on</strong> 2. Let U be a n<strong>on</strong>empty set.<br />

The ordered 5–tuple PASM(U) = 〈MS

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