Mathematical Bold Italic Small E

In 2026, Word for Windows accepts 1D486, then Alt+X.

Select just 1D486 before pressing Alt+X if hexadecimal text immediately follows it. In LaTeX with the unicode-math package, \symbfit{e} requests the bold italic math alphabet; it is a package command, not a general keyboard shortcut.

What does bold italic e mean in math?

It is a bold italic math e; the formula gives it meaning.

Math notation uses letter styles to distinguish quantities, so 𝒆 is not automatically the same variable as plain or italic e. Some typesetting conventions use bold italic letters for vectors—quantities with size and direction—but the equation or author's stated convention must tell you that.

These alphabets extend an older, smaller collection of mathematical-looking letter symbols. They were added so mathematical and technical writing could preserve letter-style distinctions as text; before Unicode, notation already used font styles to distinguish one quantity from another.

Can text cleanup turn 𝒆 into plain e?

Yes. Compatibility cleanup can erase its math style.

NFKC and NFKD are Unicode normalization forms that fold some styled characters to simpler equivalents. Applied to 𝒆, they can produce plain e, removing the encoded bold italic distinction. Avoid them when that distinction matters in a formula.