\ReThe \Re command in LaTeX is used to represent the real part of a complex number. It is typically used in mathematical expressions to denote the real component of a complex number, often in conjunction with the imaginary part, which is represented by \Im.
Real part of a complex number z = x + yi
\Re(z) = xExtracting the real part from a complex number 3 + 4i
\Re(3 + 4i) = 3Real part of a complex expression with variables
\Re(\alpha + \beta i) = \alpha