Popular special symbols for CS 536 2023-01-09 You're welcome to copy/paste these symbols into your homework solutions. Arrows ← → ↔ ⇐ ⇒ ⇔ ↦ Greek α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ υ φ χ ψ ω GREEK A B Γ Δ E Z H Θ I K Λ M N Ξ O Π P Σ T Υ X Ψ Φ Letters ℕ ℚ ℝ ℤ Logic ∧ ∨ ∀ ∃ ⊢ ⊨ ⊬ ⊭ Relations ≠ ≡ ≢ Set Thy ∅ ∪ ∩ ∊ ⊆ ⊇ ⊂ ⊃ Etc. ‖ (parallel pgms), ☐ ➞ (nondeterministic pgms)