semisimple representations
... that Clebsch–Gordan coefficients, which describe how spinning objects influence each other in quantum mechanics, come from the structure of semisimple representations?
... that <a href="./Clebsch–Gordan_coefficients" id="mwCFQ" rel="mw:WikiLink" title="Clebsch–Gordan coefficients">Clebsch–Gordan coefficients</a>, which describe how <a href="./Angular_momentum_coupling" id="mwCFU" rel="mw:WikiLink" title="Angular momentum coupling">spinning objects influence each other</a> in quantum mechanics, come from the structure of <b id="mwCFY"><a href="./Semisimple_representation" id="mwCFc" rel="mw:WikiLink" title="Semisimple representation">semisimple representations</a></b>?