What 𝓪 means
It is a separate mathematical letter, not a value by itself. A formula assigns the quantity it names; 𝓪 has no fixed meaning across equations.
Why encode 𝓪 separately?
Mathematical styles can distinguish one symbol from another.
By the 1999 proposal, bold and script alphabets were already used in research mathematics. STIX, a scientific-publishing font project, proposed separate characters to preserve each style's distinct meaning and keep plain-text math searchable.
Some software applies NFKC, a Unicode compatibility-normalization form, which can turn 𝓪 into plain a and erase the distinction in a formula.
Part of the collection
Don't confuse it with
3
Questions people ask
1Why does 𝓪 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
More like this
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How to type or find 𝓪
- Search it as
- bold script a · cursive a · fancy a · math script a
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝓪\1D4EA𝓪 in HTML or XML source to produce the character.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.