Whilst it would be intellectually pleasing if this were the concept that Warrigal is referencing, I doubt it.
I didn’t think it was the electrical engineering trick of turning a star-connected load into a triangle-connected one, but on further reflection, we are talking about a network...
The electrical engineering trick was several decades before Yang and Baxter and has its own wikipedia entry.
Whilst it would be intellectually pleasing if this were the concept that Warrigal is referencing, I doubt it.
I didn’t think it was the electrical engineering trick of turning a star-connected load into a triangle-connected one, but on further reflection, we are talking about a network...
The electrical engineering trick was several decades before Yang and Baxter and has its own wikipedia entry.