r an expression, with variables transformed by sigmoid.</p></li><li class="indented0 " name="provingground.learning.ExpressionEquationSolver.FixedExpressionProbs#jetCoordinates" group="Ungrouped" fullComment="no" data-isabs="false" visbl="pub"><a id="jetCoordinates(jt:spire.math.Jet[Double]):Map[provingground.learning.Expression,Double]"></a><a id="jetCoordinates(Jet[Double]):Map[Expression,Double]"></a> <span class="permalink"><a href="../../provingground/learning/ExpressionEquationSolver$FixedExpressionPr