What ㏑ means
It is a text frame, not a mathematical power. That lets the two-letter ln occupy one East Asian character cell.
The history of square ln belongs to a larger family of boxed Latin abbreviations associated mostly with older Korean character standards. Japanese boxed katakana and Chinese telegraph signs are related formats, but belong to different subgroups. Unicode included ㏑ in Unicode 1.1 in 1993; that dates its digital encoding, not when the boxed form began.
Compatibility normalization can replace ㏑ with the two ordinary letters ln. The encoded text changes, but the notation still denotes the natural logarithm.
Don't confuse it with
1Questions people ask
1Why does ㏑ 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 ㏑
- Search it as
- boxed ln · ln symbol · natural logarithm · ln Unicode · ㏑
- Shows up in
- Anything that takes text · its shape is whatever your font draws
㏑\33D1ln alone makes two ordinary letters.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.