c[(A,B)])=&gt;TangVec[C]"></a> <span class="permalink"><a href="../../provingground/learning/TangVec$.html#liftBilinear[A,B,C](bilinear:(A,B)=&gt;C)(implicitvs:spire.algebra.VectorSpace[C,Double]):provingground.learning.TangVec[(A,B)]=&gt;provingground.learning.TangVec[C]" title="Permalink"><i class="material-icons"></i></a></span> <span class="modifier_kind"><span class="modifier"></span> <span class="kind">def</span></span> <span class="symbol"><span class="name">liftBilinear</span><span class="tparams