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A university quantum algorithms/computation course supplement based on Qiskit

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**Describe the issue** in section 2.2 [here](https://qiskit.org/textbook/ch-gates/multiple-qubits-entangled-states.html) there is an image that is partly behind the right hand menu. It is when the text says: `The operation looks like this:`...

good first issue
content bug

**Describe the problem** The first notebook in chapter 6. Investigating Quantum Hardware Using Microwave Pulses is about the calibration of qubits with Qiskit Pulse [(here)](https://qiskit.org/textbook/ch-quantum-hardware/calibrating-qubits-pulse.html). This chapter is very rich...

New Content Suggestion

#Describe the issue 4. Quantum Algorithms for Applications, 4.1.3 Solving combinatorial optimization problems using QAOA, 5.3 Quantum circuit The decomposition of Uk,l(γ) and Xk(β) is given as Uk,l(γ)=Cu1(−2γ)k,lu1(γ)ku1(γ) Xk(β)=Rx(2β)k which...

help wanted
content bug

**Describe the issue** This passage is really hard to read. First the perturbation is calculated in the first equation The sentence about S does not to do anything with it,...

help wanted
content bug

**Describe the bug** When using the search function, the results contain pages from all translations, and not just the language the user is currently viewing in. **To Reproduce** 1. Type...

code bug
wontfix
textbook 2.0

**What should the reader gain from this new content?** I want to suggest a chapter on quantum information. After reading the chapter the student will understand about other representations of...

New Content Suggestion

**Is your feature request related to a problem? Please describe.** Quantum Computing Labs chapter of the texbook has no way to verify if the queries submitted are right. **Describe the...

enhancement
textbook 2.0

**Describe the issue** Though we might want to refer to "statevector" as direct reference to how we type it in python, "statevector" (one word) has been adopted in current language...

good first issue
content bug

### **What should the reader gain from this new content?** This is a proposal for a potential new chapter. The main goal of the chapter is to introduce ZX-calculus, a...

New Content Suggestion

**Describe the problem** I think some things can be added in this section for better clarity for first time readers. **Describe the expected solution** In [5.5.2 Mixed States](https://qiskit.org/textbook/ch-quantum-hardware/density-matrix.html#2.-Mixed-States-), The content...

enhancement