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ℤ

From Wiktionary, the free dictionary

See also: Appendix:Variations of "z"

ℤ U+2124, ℤ
DOUBLE-STRUCK CAPITAL Z
← ℣
[U+2123] 		Letterlike Symbols ℥ →
[U+2125]

𝐙 U+1D419, 𝐙
MATHEMATICAL BOLD CAPITAL Z
← 𝐘
[U+1D418] 		Mathematical Alphanumeric Symbols 𝐚 →
[U+1D41A]

Translingual

Alternative forms

Etymology

From 𝐙, from abbreviation of German Zahlen (“numbers”). The usage of blackboard bold dates to the 1960s.

Symbol

ℤ

  1. (mathematics) Alternative form of 𝐙, the set of integers.
  2. (algebra, topology, order theory) The set of integers with some usual structure.

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