## What does := mean in logic?

Answer. According to Wikipedia’s article on logic symbols, := is **used for definition**. The truth of a proposition can be determined through empirical or rational means, but sometimes it is assigned axiomatically: p = q means there is an equivalence of values.

## What does the symbol mean in logic?

The logical OR symbol is **used in Boolean algebra to indicate an inclusive disjunction between two statements**. An inclusive disjunction is true if either, or both, of its components are true. The most commonly used symbol is a plus sign (+).

## What are the symbols of logical operators?

Binary Logical Connectives

Symbol Name | Explanation | Example |
---|---|---|

P ∧ Q | Conjunction ( and ) | P ∧ P ≡ P |

P ∨ Q | Disjunction ( or ) | ¬ ( P ∨ Q ) ≡ ¬ P ∧ ¬ Q |

P ⊻ Q , | Exclusive disjunction ( xor ) | P ⊕ Q ≡ ( P ∨ Q ) ∧ ¬ ( P ∧ Q ) |

P ↑ Q | Negation of conjunction ( nand ) | P ↑ Q ≡ ¬ ( P ∧ Q ) |

## What does ∨ mean in logic?

inclusive disjunction

The symbol ” ∨ ” signifies **inclusive disjunction**: a ∨ statement is true whenever either (or both) of its component statements is true; it is false only when both of them are false. (See the truth-table at right.)

## What does this symbol mean ⊕?

direct sum

⊕ (logic) **exclusive or**. **(logic) intensional disjunction**, as in some relevant logics. (mathematics) direct sum. (mathematics) An operator indicating special-defined operation that is similar to addition.

## What does this ⊕ mean?

The symbol ⊕ means **direct sum**.

## What does +- mean in math?

plus/minus sign

Definition of plus/minus sign

: the sign ± used to indicate a quantity (such as 2 in “the square root of 4 is ±2”) taking on both an algebraically positive value and its negative and to indicate a plus or minus quantity (such as 4 in “the population age was 30 ± 4 years”) — called also plus/minus symbol.

## Does Plus MEAN and or or?

From Wiki: In logic and mathematics, or is a truth-functional operator also known as (inclusive) disjunction and alternation. **The logical connective that represents this operator is also known as “or”, and typically written as v or + .**

## What does ∼ P ∧ Q mean?

P ∧ Q means **P and Q**. P ∨ Q means P or Q. An argument is valid if the following conditional holds: If all the premises are true, the conclusion must be true. Some valid argument forms: (1) 1.

## What does the wedge mean in logic?

∧ or (English symbol name wedge) (mathematics, logic) **The conjunction operator, forming a Boolean-valued function, typically with two arguments, returning true only if all of its arguments are true**.

## What are symbols called?

This table contains special characters.

Symbol | Name of the symbol | Similar glyphs or concepts |
---|---|---|

& |
Ampersand |
plus sign |

⟨ ⟩ | Angle brackets | Bracket, Parenthesis, Greater-than sign, Less-than sign |

‘ ‘ | Apostrophe | Quotation mark, Guillemet, Prime, Grave |

* | Asterisk | Asterism, Dagger |

## What is the symbol for and in logic?

Basic logic symbols

Symbol | Unicode value (hexadecimal) | Logic Name |
---|---|---|

∧ · & | U+2227 U+00B7 U+0026 |
logical conjunction |

∨ + ∥ | U+2228 U+002B U+2225 | logical (inclusive) disjunction |

↮ ⊕ ⊻ ≢ | U+21AE U+2295 U+22BB U+2262 | exclusive disjunction |

⊤ T 1 ■ | U+22A4 U+25A0 | Tautology |

## What is this _ symbol called?

The **underscore symbol** ( _ ) is a symbol that looks like a long hyphen positioned at the bottom of the line.

## What does text symbols mean?

Text-symbol definition

Filters. The definition of a text symbol is **a graphic or symbol made with the keys on a keyboard**. An example of a text symbol is the heart symbol which is made by pressing “Alt” and the number “3” on an enabled numeric key pad.

## What is a symbol in a story?

A symbol is **anything that stands for, or represents, something else**. In a story, a character, an action, an object, or an animal can be symbolic. Often these symbols stand for something abstract, like a force of nature, a condition of the world, or an idea.

## What does 🙂 mean in texting?

🙂 means “**Happy**.”