# What's the special notation?

I'm studying "ALGORITHMIC AND HIGH-FREQUENCY TRADING". Page 249 of it tries to find a formula for $$h(t,q)$$. First, it supposes $$h(t,q) = \bar\kappa log \space\omega(q,t)$$ then let $$\omega(t)=[\omega(t,\bar{q}),\omega(t,\bar{q}-1),...,\omega(t,q)]'$$.

My question is: "What is the meaning of notation $$'$$, in $$\omega(t)=[\omega(t,\bar{q}),\omega(t,\bar{q}-1),...,\omega(t,q)]'$$? Is it Lagrange's notation for differentiation?