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I'm a Humanities person with embarrassingly scant knowledge of maths, so before I utilise these glyphs, it's best to confirm they're the same as those in the photo.
In Georgia, the matching glyphs appear to be "α", "θ", then either "σ" or "б".
The rest—other than the German double s and the << arrows—aren't available in the glyphs panel it seems.
Can anyone confirm?