Variant forms of the letter have special code points for professional use: the alphanumeric symbols set in arithmetic and science, Latin alpha in linguistics, and halfwidth and fullwidth forms for legacy CJK font compatibility. The Cyrillic and Greek homoglyphs of your Latin ⟨A⟩ have individual encodingsÆ æ Ɑ ɑ Ʌ ʌ Ꞵ ꞵ Ð ð Ɛ ɛ Ə