[steve86]

Thanks for the explanation. “E8” — I’ve seen that before! (Lisi)

[E8crossE8]

Thanks for the explanation.

My pleasure.

“E8” — I’ve seen that before! (Lisi)

The "E8" in my name refers to a so-called "Lie group," a type of mathematical structure that plays an important role in the physics of elementary particles (Lie groups have many other uses in other fields, as well). "E8 cross E8" refers to what is called the ("semi-direct") tensor product of two copies of this Lie group - this product of groups has played a crucial role in string theory. My use of this as a name is in this context.