# Complex conjugate vectors?

1. Dec 9, 2013

### janu203

what is the dot product of two complex conjugate vectors?

2. Dec 9, 2013

### Simon Bridge

$$\vec v^\star \cdot \vec v$$ you mean?
You can figure it out for yourself...

So let $\vec v = (v_1,v_2,v_3,\cdots)^t$ And $\vec u = (u_1,u_2,u_3,\cdots)^t$ where $v_i,u_i\in\mathbb{C}$

What would $\vec u \cdot \vec v$ be, in terms of the components?

Now let $\vec u = \vec v^\star$

3. Dec 10, 2013

### janu203

sorry sir! i didn't get you

4. Dec 10, 2013

### Simon Bridge

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