+math => {
+ equal => [qw{. ∼ ≈ ≅ ≡ ∃ . ≁ ≉ ≇ ≢ ∄ }],
+ size => [qw{. ≪ < ≤ \= ≥ \> ≫ . - ≮ ≰ ≠ ≱ ≯ - }],
+ set => [qw{. ∈ ⊂ ⊆ ∀ ⊇ ⊃ ∋ ∪ . ∉ ⊄ ⊈ ∅ ⊉ ⊅ ∌ ∩ }],
+ logic => [qw{. ∧ ∨ ⊻ ⊥ ¬ . ⊼ ⊽ ↔ ⊤ - }],
+
+ constant => [qw{. ℝ πϖ ℯ φ ϑ ∂ ℵ }],
+ predicate=> [qw{. ∴ ∵ }],
+ complex => [qw{. ℂ iℑ }],
+ number => [qw{. ℕ ∞ ℤ ℚ ℝℜ ℂ ‰ ℘ }],
+# natural inf int rational
+# Θ
+ function => [qw{. ⌈ ⌉ . ⌊ ⌋ . ƒ ∑ ∏ ∫ ∇ ∝ }],
+},
+