 Feasibility is imposed by a set of constraints, which are linear in the log-transformed space of complexes, and relate to the kernel of the stoichiometric subspace.
<meaning-changed>  Feasibility is imposed by a set of constraints, which are linear in the log-transformed space of complexes, and relate to the kernel of the stoichiometric subspace.
 Feasibility is imposed by a set of constraints, which are linear in the log-transformed space of complexes, and relate to the kernel of a matrix, the columns of which span the stoichiometric subspace.