MHB Null Column Vector vs $ |0 \rangle$

[ognik]

Hi - is there any difference between 'null column vector' and $ |0 \rangle $? Ta

 

[Ackbach]

There's no difference in the usual matrix interpretation of bras and kets. Kets are column vectors, and bras are complex conjugate tranposes, so they're row vectors. This does change in infinite-dimensional Hilbert space.