(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm trying to express the conditions for a zigzag carbon nanotube in a mathematical vector.

2. Relevant equations

B = na_{1}+ ma_{2}

3. The attempt at a solution

I want to say "either a=0 or b=0", but must I also say that it can't be a=b=0 or is that already excluded in the statement? I'm not sure of the mathematical logic at work.

Thanks in advance

P.S B, a1 and a2 are vectors, but I couldn't find the bold button.

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

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!

# Homework Help: Zigzag carbon nanotubes

Have something to add?

Draft saved
Draft deleted

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