Prove that QFT and Walsh-Hadamard gates give the same output when acting on $\lvert x\rangle\lvert 0\rangle$
59907
Why can the QFT be replaced by Hadamard gates?
51276
Prove that in Bell's inequality $\langle{\Psi}|\left(\bf{\sigma}\cdot\bf{a}\right)\left(\bf{\sigma}\cdot\bf{b}\right)|{\Psi}\rangle=-\bf a \cdot\bf b$
44843
What is the difference between $|0\rangle $ and $0$?
100142
Is the Pauli group for $n$-qubits a basis for $\mathbb{C}^{2^n\times 2^n}$?
141907
Haag's theorem and practical QFT computations
57166
Showing that $\Bbb R[x] / \langle x^2 + 1 \rangle$ is isomorphic to $\Bbb C$ question
2626
Show $\langle a^m \rangle \cap \langle a^n \rangle = \langle a^{\operatorname{lcm}(m, n)}\rangle$
14867
How to interpret $\langle x|\hat Q|x'\rangle$ for a quantum mechanical operator $\hat Q$?
127047
How to show that $\sum_{i=1}^n | \langle f, f_i\rangle |^2 \leq \Vert f \Vert^2$
88370
How to construct a controlled-Hadamard gate using single qubit gates and controlled phase-shift?
25187
Why $∀x(P(x)→Q)$ is equivalent to $∃xP(x)→Q$
102990
Prove or disprove: $S_{10} = \langle (1,3),(1,2, ... ,10) \rangle$
21363
Prove the uniqueness of an inner product
95806
Proving commutativity of convolution $(f \ast g)(x) = (g \ast f)(x)$
71064
How to prove that $\langle Av,w\rangle=\langle v,A^Tw\rangle$?
152932
Proof: $\det\pmatrix{\langle v_i , v_j \rangle}\neq0$ $\iff \{v_1,\dots,v_n\}~\text{l.i.}$
98771
Decomposition of an arbitrary gate using given matrix in Qiskit