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ObsidianVault/SS2026/Quantum Computing/8. Ket Notation/Ket Notation.md
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Vectors to describe quantum states can get tedious really quick, so we introduce a new notation. We can rewrite a quantum state in the following way: !Pasted image 20260730101012.png

To represent the vector e_i as its classical possibility we use \ket{} . For a classical possibility x, which is the i-th possibility represented by e_i we use: !Pasted image 20260730101435.png