Množiny

$$C\ =\ A\cap B$$

$$C\subset A$$

$$C\subset B$$

$$C\subset\left(A\cap B\right)$$

$$6\in B$$

$$\left\{B;\ G;\ I\right\}$$

$$\left\{H;\ B;\ G;\ A\right\}$$

$$\left\{G;\ E;\ B;\ I\right\}$$

$$\left\{I;\ E;\ G;\ B;\ F\right\}$$

$$\left\{▽\ ;△\right\}$$

$$\left\{△\right\}$$

$$\left\{▽\right\}$$

$$\left\{\right\}$$

$$\left\{✡\right\}$$

$$\left\{3;\ 4\right\}\cap A$$

$$\left\{3;\ 4\right\}\subset A$$

$$\left\{3;\ 4\right\}\supset\ A$$

$$\left\{3;\ 4\right\}\cup A$$

$$\left\{3;\ 4\right\}$$

$$\left\{1;\ 2\right\}$$

$$\left\{5;\ 6;\ 7\right\}$$

$$\left\{1;\ 2;\ 3;\ 4;\ 5;\ 6;\ 7\right\}$$

$$\left\{n\in N;\ n<3\right\}$$

$$\left\{n\in N;\ n<5\right\}$$

$$\left\{n\in N;\ 3\le n\le7\right\}$$

$$\left\{n\in N;\ n<8\right\}$$

$$A\backslash B$$

$$B\backslash A$$

$$A'_B$$

$$B'_A$$

$$2\subset B$$

$$2\in B$$

$$2\notin B$$

$$2\not\subset B$$

$$\left\{2\right\}\subset A$$

$$\left\{2\right\}\in A$$

$$\left\{2\right\}\supset A$$

$$\left\{2\right\}\not\ni A$$

$$\left\{n\in N;\ n\le3\right\}$$

$$\left\{1;\ 2;\ 3\right\}$$

$$\left\{n\in Z;\ n\le3\right\}$$

$$\left\{n\in N;\ n<3\right\}$$

$$\left\{n\le3\right\}$$