On: Deep Quaternion Networks (2017) [pdf]

[Myrmornis]

Any suggestions for readable introductions to how complex numbers help neural networks?

[danharaj → Myrmornis]

https://arxiv.org/pdf/1312.6115.pdf

There aren't really any introductions, just research papers. If you have some understanding of real valued neural networks you'll probably be able to work your way through the literature.