Ĵ


Ĵ or ĵ is a letter in Esperanto orthography representing the sound.
While Esperanto orthography uses a diacritic for its four postalveolar consonants, as do the Latin-based Slavic alphabets, the base letters are Romano-Germanic. Ĵ is based on the French pronunciation of the letter j to better preserve the shape of borrowings from that language than Slavic ž would.
Ĵ is used in the Persian Latin alphabet, equivalent to ژ.

Usage

In mathematics