Kets: |ψ⟩, |n⟩, |↑⟩, |+⟩ - Bras: ⟨ψ|, ⟨n| - Inner products: ⟨φ|ψ⟩ - Outer products / projectors: |φ⟩⟨ψ| - Matrix elements: ⟨m|Â|n⟩ - Tensor products: |ψ⟩ ⊗ |φ⟩ (sometimes abbreviated |ψ⟩|φ⟩ or |ψφ⟩)