Unsupported titles/Enclosing vertical lines

Unsupported titles/Enclosing vertical lines

See also: ǁ [U+01C1 LATIN LETTER LATERAL CLICK], ‖ [U+2016 DOUBLE VERTICAL LINE], ‖ ‖, ∥ [U+2225 PARALLEL TO], and ⏸ [U+23F8 DOUBLE VERTICAL BAR]

| U+007C, | VERTICAL LINE ← { [U+007B] Basic Latin } → [U+007D]

Translingual

Symbol

| |

1. (mathematics) Marks absolute value.

   |-3| = 3

   The absolute value of minus three is three.

   For x = (1,1), and y = (4,5), |x – y| = √([1–4]² + [1–5]²) = 5

   For x equals one, one and y equals four, five, the absolute value of the quantity x minus y is the square root of (open parentheses) the quantity one minus four squared plus the quantity one minus five squared (close parentheses) or five.

2. (mathematics) Marks determinants.

   |A|

   The determinant of the matrix A

3. (mathematics) Marks the operation of finding the cardinality of a set.

   ${\\displaystyle \\left|\\{3,5,7,9\\}\\right|=4}$

   The set three, five, seven, and nine has a cardinality of four.

4. (mathematics) Notes the number of connected components.

   ${\\displaystyle \\left|S^{0}\\right|=2}$

Synonyms

• (cardinality): #, card

See also

• See ‖ for the caesura used individually, and see ‖ ‖ for two caesuras enclosing other text.