Definition

1. Noun (Mathematics):
   • Abstract number: A number considered independently of any specific objects or units of measurement. It represents a pure quantity or value without reference to a concrete physical context.

Usage Examples

• Noun:
  • Trong toán học cơ bản, các số hư như 5, 12, hay 200 được nghiên cứu về tính chất của chúng. (In basic mathematics, abstract numbers like 5, 12, or 200 are studied for their properties.)
  • Phép cộng hai số hư cho ra một số hư khác. (The addition of two abstract numbers yields another abstract number.)

Advanced Usage

• The concept of an abstract number is foundational in pure mathematics, contrasting with a "concrete number" which refers to a specific number of items (e.g., 5 apples).
• It is used in theoretical contexts discussing number theory, algebra, and the axiomatic properties of numerical systems.

Variants and Related Words

• Số cụ thể (n): Concrete number; a number that refers to a specific quantity of objects or units.
  • "5 quả táo" là một số cụ thể, trong khi "5" đơn thuần là một số hư. ("5 apples" is a concrete number, while "5" alone is an abstract number.)

Synonyms

• Abstract numeral
• Pure number

Notes

• The term số hư is a specialized mathematical term. In everyday language, Vietnamese speakers simply use số (number). The "hư" (abstract) part is only specified in academic or technical contexts to emphasize the conceptual nature of the number.

1. (toán học) Abstract number