Σύνολο: Διαφορά μεταξύ των αναθεωρήσεων

*<math>\left(\bigcap_{i\in I}X_{i}\right)\cup\left(\bigcap_{j\in J}Y_{j}\right)=\bigcap_bigcap\limits_{ \begin{smallmatrix} {i, \in I} \\ {j \in {J}} \end{smallmatrix}}(X_{i}\cup Y_{j}).</math>

*<math>\left(\bigcup_{i\in I}X_{i}\right)\cap\left(\bigcup_{j\in J}Y_{j}\right)=\bigcup_bigcup\limits_{ \begin{smallmatrix} {i, \in I} \\ {j \in {J}} \end{smallmatrix}}(X_{i}\cap Y_{j}).</math>

*<math>\left(\bigcap_{i\in I}A_{i}\right)\times B=\bigcap_{i\in I}(A_{i}\times B).</math>

*<math>\left(\bigcup_{i\in I}A_{i}\right)\times B=\bigcup_{i\in I}(A_{i}\times B).</math>

*<math>\left(\bigcap_{i\in I}A_{i}\right)\times\left(\bigcap_{j\in J}B_{j}\right)=\bigcap_bigcap\limits_{ \begin{smallmatrix} {i, \in I} \\ {j \in {J}} \end{smallmatrix}}(A_{i}\times B_{j}).</math>

*<math>\left(\bigcup_{i\in I}A_{i}\right)\times\left(\bigcup_{j\in J}B_{j}\right)=\bigcup_bigcup\limits_{ \begin{smallmatrix} {i, \in I} \\ {j \in {J}} \end{smallmatrix}}(A_{i}\times B_{j}).</math>