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         → ← ↔ ⇒ ⇐ ⇔ ↦ ↪ ↩ ↑ ↓ ⇑ ⇓ ⟶ ⟵ ⟷ ⟹ ⟸ ⟺ ⊸

Number sets & brackets

sets           ℕ ℤ ℚ ℝ ℂ ℙ ℍ 𝔽
brackets       ⟨ ⟩  ⌈ ⌉  ⌊ ⌋  ‖ ‖  〈 〉

Sub/superscript glyph blocks

superscript    ⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹  ⁺ ⁻ ⁼ ⁽ ⁾  ⁱ ⁿ ᵃ ᵇ ᶜ ᵈ ᵉ ᶠ ᵍ ʰ ʲ ᵏ ˡ ᵐ ᵒ ᵖ ʳ ˢ ᵗ ᵘ ᵛ ʷ ˣ ʸ ᶻ
subscript      ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉  ₊ ₋ ₌ ₍ ₎  ₐ ₑ ₕ ᵢ ⱼ ₖ ₗ ₘ ₙ ₒ ₚ ᵣ ₛ ₜ ᵤ ᵥ ₓ

Common LaTeX → Unicode

LaTeX	Unicode	LaTeX	Unicode	LaTeX	Unicode
\alpha	α	\sum	∑	\in	∈
\beta	β	\prod	∏	\notin	∉
\gamma	γ	\int	∫	\subset	⊂
\delta	δ	\partial	∂	\subseteq	⊆
\epsilon	ε	\nabla	∇	\cup	∪
\theta	θ	\infty	∞	\cap	∩
\lambda	λ	\emptyset	∅	\setminus	∖
\mu	μ	\leq	≤	\wedge	∧
\pi	π	\geq	≥	\vee	∨
\sigma	σ	\neq	≠	\neg	¬
\phi	φ	\approx	≈	\Rightarrow	⇒
\omega	ω	\equiv	≡	\Leftrightarrow	⇔
\sqrt	√	\propto	∝	\forall	∀
\pm	±	\cdot	·	\exists	∃
\times	×	\to	→	\mathbb{R}	ℝ