what do these signs mean

² ³ √ ∛ · ≈ ≠ , ≡ ≅ ⇒ ⇔ ∈ ∉ ∧ ∨ ∞ α β Δ π Ф ω ↑ ↓ ∵ ∴ ↔ → ← ⇵ ⇅ ⇄ ⇆ ∫ ∑ ⊂ ⊃ ⊆ ⊇ ⊄ ⊅ ∀ ∝ ∦ ║ ⊕ ¬ ∅ ∩ ∪ ⊥ ∡ ∠ ° ∞ ㏒ ㏑

if you can answer this i will name you the brainiest