I was curious if there was a non-commutative version of Pascal's triangle for operators (such as those used in brah-ket notation)(adsbygoogle = window.adsbygoogle || []).push({});

The important note is that (a + b)^2 = a^2 + b^2 + ab +ba

where ba != ab

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Pascal's Triangle for non-commutative?

**Physics Forums | Science Articles, Homework Help, Discussion**