De Morgan's laws: Revision history

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13 May 2024

11 May 2024

  • curprev 15:0615:06, 11 May 2024‎ Kaiphom talk contribs‎ 22,753 bytes +1‎ →‎Part 2: Though 'or' provides a correct implication, using this argument cannot conclusively claim that <math>x \not\in \overline{A} \cup \overline{B}</math>. 'and' is correct and gives a much stricter condition, allowing <math>x \not\in \overline{A} \cup \overline{B}</math> to be guaranteed. <math>x \in A</math> and <math>x \in B</math>, and thus <math>x \not\in \overline{A}</math> or <math>x \not\in \overline{B}</math>. However, that means <math>x \not\in \overline{A} \cup \overline{B... undo Tags: Mobile edit Mobile web edit

7 May 2024

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