</sup></strong></span></em></span>
        and in <span class="emphasis"><em><span class="bold"><strong>R<sup>4</sup></strong></span></em></span>, and the correspondences
        are not too complicated, but there is currently a lack of standard (de facto
        or de jure) matrix library with which the conversions could work. This should
        be remedied in a further revision. In the mean time, an example of how this
        could be done is presented here for <a href="../../../../../quaternion/HSO3.hp