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. 2019 May 2;21(5):459. doi: 10.3390/e21050459

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Disjunction of two conjunctions $(A \land B) \lor C$ . (A) All inputs to D are considered relevant variables. (B) $B = 0$ is taken as a fixed background condition.