TeXipedia

j

Represents a dotless lowercase letter used primarily in mathematical and linguistic contexts where a regular 'j' might cause confusion.

Overview

Serves as a specialized character in mathematical notation and certain language transcriptions where distinguishing between dotted and dotless forms is essential.

  • Common in Turkish language typesetting where both dotted and dotless variants are needed
  • Used in complex number notation as an alternative to 'i' in some engineering contexts
  • Appears in specialized mathematical formulas where a dotless variant helps avoid confusion with other symbols
  • Often employed in phonetic transcriptions and linguistic documentation

Examples

Using the dotless j in a multilingual mathematical context

f(ȷ)=eiπf(\text{\j}) = e^{i\pi} 
f(\text{\j}) = e^{i\pi}

Comparing regular j with dotless j in an equation

j1≠ȷ1j_{1} \neq \text{\j}_{1} 
j_{1} \neq \text{\j}_{1}

Using dotless j as a complex unit alternative

z=x+ȷyz = x + \text{\j}y 
z = x + \text{\j}y