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Latex real part symbol

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How to write Latex real part symbol of a complex number? The real number a is called the real part of the complex number a + ib.

Let $a,b\in \mathbb{R}$ and $z=a+ib \in \mathbb{C}$.

Real part and imaginary part are defined like follows:

$$ \begin{array}{ccc} a & + & i & b\\ \uparrow & & &\uparrow \\ \Re (z) & & &\Im (z) \\ \text { Real part } & && \text { Imaginary part } \end{array} $$

Default Latex real part symbol

You can use \Re function:

$$\Re (z)= \Re(a+ib)=a$$

$$ \Re (z)= \Re(a+ib) = a $$

Latex real part symbol using amsmath and operatorname

You can use \operatorname function:


$$\operatorname{Re}(z)= \operatorname{Re}(a+ib)=a$$


$$ \operatorname{Re}(z)= \operatorname{Re}(a+ib)=a $$

Latex real part symbol using amsfonts and mathfrak

You can use \mathfrak function:


$$\mathfrak{Re}(z)= \mathfrak{Re}(a+ib)=a$$


$$\mathfrak{Re}(z)= \mathfrak{Re}(a+ib)=a$$

How to write Latex imaginary part symbol

How to write Latex imaginary part symbol

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