# The codebook needs more basic explanation

**URL:** <https://discuss.pennylane.ai/t/the-codebook-needs-more-basic-explanation/9413>\
**Category:** Codebook\
**Created:** [July 16, 2026, 4:02am UTC](https://discuss.pennylane.ai/t/the-codebook-needs-more-basic-explanation/9413 "2026-07-16T04:02:56Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mbzadegan](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/mbzadegan/32/4298_2.png) [@mbzadegan](https://discuss.pennylane.ai/u/mbzadegan)\
**Post date:** [July 16, 2026, 4:02am UTC](https://discuss.pennylane.ai/t/the-codebook-needs-more-basic-explanation/9413/1 "2026-07-16T04:02:56Z")

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When I teach PennyLane to my students, they sometimes ask about basic concepts in the Codebook, such as where equation (7) comes from. I thought it would be helpful to provide the proof of equation (7) so that you can include it in your Codebook.

> **[Introduction to Quantum Computing | All About Qubits | PennyLane Codebook](https://pennylane.ai/codebook/introduction-to-quantum-computing/all-about-qubits)**
>
> Learn the fundamental concepts in quantum computing.

And here ⬇ is my explanation:

 ![proove](https://canada1.discourse-cdn.com/flex012/uploads/pennylane/original/2X/c/c6fbedcab7ed27480c391b0ef3b7bd2724cd75ba.jpeg)

Please let me know if anything is incorrect.

Best regards.

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**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\
**Post date:** [July 21, 2026, 1:19am UTC](https://discuss.pennylane.ai/t/the-codebook-needs-more-basic-explanation/9413/2 "2026-07-21T01:19:47Z")

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Hi @mbzadegan, it’s great to hear that you’re teaching your students with the Codebook, and thanks for this feedback!

I think this could indeed be something like an Exercise I.1.3. It could read something like, “Based on what you learned from Exercises I.1.1 and Exercise I.1.2, prove equation 7”.

I’ll check with our team to find the best way to address this.

Just out of curiosity, are you teaching a course at a school or university? If so, which one?

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**Author:** ![mbzadegan](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/mbzadegan/32/4298_2.png) [@mbzadegan](https://discuss.pennylane.ai/u/mbzadegan)\
**Post date:** [July 21, 2026, 5:04pm UTC](https://discuss.pennylane.ai/t/the-codebook-needs-more-basic-explanation/9413/3 "2026-07-21T17:04:29Z")

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Hi @CatalinaAlbornoz  
Thank you for your understanding.

Actually, I’m tutoring Quantum computing with PennyLane to some university students. I am also helping university authors to test their research with PennyLane and Julia programming.

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**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\
**Post date:** [July 23, 2026, 9:21pm UTC](https://discuss.pennylane.ai/t/the-codebook-needs-more-basic-explanation/9413/4 "2026-07-23T21:21:13Z")

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That’s amazing @mbzadegan !

Is this for a specific university and/or a specific country? If so, which one?

We collaborate with some universities who want to teach and use quantum computing and quantum programming, so if you know any professors who could be interested they can contact our team via our education page! [Education — PennyLane](https://pennylane.ai/education)