Calculate the vector between to two positions
\(\boldsymbol{a},\boldsymbol{b}\in\mathbb{R}^n\)
\[\begin{split}\text{vec}(\boldsymbol{a},\boldsymbol{b})
=\begin{pmatrix}b_1-a_1\\\vdots\\b_n-a_n\end{pmatrix}\end{split}\]
Parameters: |
- pos_a : list
First position \(\boldsymbol{a}\)
- pos_b : list
Second position \(\boldsymbol{b}\)
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Returns: |
- vector : list
Bond vector
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