math-unicode

# math-unicode When emitting mathematical notation in a terminal coding agent (Claude Code, Codex CLI, or similar), **always use Unicode glyphs inline** — never wrap math in `$…$`, `\(...\)`, or `$$...$$`. These terminals do not render LaTeX; raw delimiters appear as plain dollar signs and reduce readability. ## When this skill applies Triggers (use Unicode math): - Equations, formulas, derivations - Filter conditions, set-builder notation - Statistics: probabilities, expectations, distributions - Calculus, linear algebra, logic - Counts, ratios, fractions, drops where precision matters Skip (do not transform): - The user explicitly asks for LaTeX or a `.tex` file - Math inside fenced code blocks (preserve source syntax) - Strings being passed to a system that consumes LaTeX (KaTeX MCP, etc.) ## Glyph cheatsheet ### Greek ``` lowercase α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ υ φ χ ψ ω uppercase Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω variants ϵ ϑ ϕ ϖ ϱ ς ``` ### Operators ``` arithmetic + − × ÷ ± ∓ · ∗ ⋅ ∘ ⊕ ⊖ ⊗ ⊘ ⊙ big ∑ ∏ ∐ ∫ ∮ ∬ ∭ ⨁ ⨂ ⨅ ⨆ roots √ ∛ ∜ calculus ∂ ∇ Δ ∆ ⅆ ⅇ constants ∞ ∅ ℵ ℶ ``` ### Relations ``` equality = ≠ ≈ ≅ ≡ ≜ ≝ ≐ ∝ ∼ ≃ ≢ order < > ≤ ≥ ≪ ≫ ⋘ ⋙ ⊴ ⊵ set ∈ ∉ ∋ ∌ ⊂ ⊃ ⊆ ⊇ ⊊ ⊋ ⊏ ⊐ ⊑ ⊒ set ops ∪ ∩ ⊎ ⊔ ⊓ ∖ ``` ### Logic & arrows ``` logic ∧ ∨ ¬ ⊕ ⊻ ⊼ ⊽ ⊢ ⊨ ⊥ ⊤ quantifiers ∀ ∃ ∄ ∴ ∵ arrows → ← ↔ ⇒ ⇐ ⇔ ↦ ↪ ↩ ↑ ↓ ⇑ ⇓ ⟶ ⟵ ⟷ ⟹ ⟸ ...