1. 論理積(AND):二つの条件が両方とも真の場合に真となります。

2. 論理和(OR):二つの条件のどちらかが真の場合に真となります。

3. 否定(NOT):条件を反転させ、真なら偽、偽なら真となります。


ブーリアン論理式は、コンピュータプログラムの条件文、論理回路の設計、データベースクエリーなどのさまざまな場面で使用されます。例えば、IF文における条件式(例:IF(A AND B) THEN C)はブーリアン論理式の一例です。


A Boolean formula is a mathematical expression used in the field of logic developed by George Boole. This is a way to express logical conditions or relationships using two values: true and false (usually 1 and 0, or true and false).


Boolean logical expressions are constructed primarily using logical operators. The main boolean operators are:


1. Logical product (AND): True if two conditions are both true.

2. Logical disjunction (OR): True if either of the two conditions is true.

3. Negation (NOT): Reverses the condition; if it is true, it becomes false; if it is false, it becomes true.


Boolean logical expressions are used in a variety of situations, including conditional statements in computer programs, designing logic circuits, and database queries. For example, the conditional expression in an IF statement (e.g. IF (A AND B) THEN C) is an example of a Boolean logical expression.