双线斜体小写 J ⅉ

Letter 「j」 is present in all Latin alphabets. It represents a voiced palatal approximant sound, ] or ], depending on the phonetic system of a particular language. Historically, 「j」 was a variant of the letter 「i」 but it later became independent.

The lowercase j is used to denote one of the basic vectors, an imaginary quantity, jerk, a secondary index in programming and mathematics. These goals can be achieved with the help of symbol 𝑗 from the block with 字母和数字符号  1D400–1D7FF .

The double-struck italic lowercase 「j」 comes in handy when you need to write words in English, French, German, and other languages. Use the double-struck letter to decorate your text.

符号 「双线斜体小写 J」 包含在 「字母式符号」 块的 「雙擊斜體數學符號」 子块中，并在2002年作为Unicode版本3.2的一部分获得批准。