From quantum mechanics, we know that the tensor product of two spin-half representations would give us spin-1, and spin-0 reps, i.e, $$(1/2,0)\otimes(1/2,0)\cong(1,0)\oplus(0,0)$$ I want to know what happens in case $(1/2,0)\otimes(0,1/2)$.
(I have seen in some places that $(1/2,0)\otimes(0,1/2)$ is equivalent to $(1/2 , 1/2)$, but I just don't understand how... )