Ẑ

Z with circumflex
Z with circumflex
Ẑ ẑ
Usage
Writing system	Latin script
Type	alphabetic
Language of origin	ISO 9 Cyrillic transliteration, Poliespo, Tsilhqot'in
Sound values	/ẕˤ/
In Unicode	U+1E90, U+1E91
	This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between [ ], / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters.

Ẑ is a Latin script letter, the letter Z with a circumflex, used for transliteration of the Cyrillic letter Ѕ in ISO 9 family of transliteration standards, and rarely used in Pinyin as a shorthand of zh. It is also used in Poliespo for the sound /kts/, and in the Tsilhqotʼin language to represent /zˤ/.

In mathematics, ẑ often refers to the unit vector in the +Z direction. In advanced mathematics, ${\widehat {\mathbb {Z} }}$ refers to the ring of profinite integers.

References

↑ "ISO 9:1995: Information and documentation -- Transliteration of Cyrillic characters into Latin characters -- Slavic and non-Slavic languages". International Organization for Standardization. Retrieved 13 Apr 2012.

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[ISO9-1] "ISO 9:1995: Information and documentation -- Transliteration of Cyrillic characters into Latin characters -- Slavic and non-Slavic languages". International Organization for Standardization. Retrieved 13 Apr 2012.