What is the difference between $|0\rangle+|1\rangle$ and a balanced mixture of $|0\rangle$ and $|1\rangle$?
46488
What is the difference between superpositions and mixed states?
157297
Should the eigenkets be weighted in $|P\rangle = \sum\limits_{r}|\xi^r\rangle$?
37887
What does the Pauli Exclusion Principle say about a superposition of spin states?
122213
Proving that if $\langle Ax,x\rangle =0$ for every $x$, then $A$ is the zero operator
43842
Negative probabilities in quantum physics
51276
Prove that in Bell's inequality $\langle{\Psi}|\left(\bf{\sigma}\cdot\bf{a}\right)\left(\bf{\sigma}\cdot\bf{b}\right)|{\Psi}\rangle=-\bf a \cdot\bf b$
68951
Normalization of the overlap $\langle x'|p'\rangle$
20503
Meaning of inner product $\langle \vec{r} | \psi(t)\rangle $
55373
The difference between 0. and 0
11715
Prove that if $\langle Tx,x\rangle =0$ for all $x \in X$, then $T = 0$
18839
Proof about inner product space $\vert \langle x,y\rangle \vert=\Vert x \Vert\Vert y \Vert$
102990
Prove or disprove: $S_{10} = \langle (1,3),(1,2, ... ,10) \rangle$
127047
How to show that $\sum_{i=1}^n | \langle f, f_i\rangle |^2 \leq \Vert f \Vert^2$
76878
Which experiment can differentiate a statistical mixture from a superposition state?
34147
$\|u\|\leq \|u+av\| \Longrightarrow \langle u,v\rangle=0$
23089
Differences between symmetric, Hermitian, self-adjoint, and essentially self-adjoint operators
153684
In quantum mechanics, is $|\psi\rangle$ equal to $\psi(x)$?