  William of Ockham discusses the Posterior Analytics and demonstration in two places, his Summa Logicae III.II, On Demonstrative Syllogism, and his Scriptum in Librum Sententiarum Ordinatio, Prologue, Questions 2 through 6 (before 1324). In the latter, he develops an account of demonstration to discuss the question what, if anything, can be demonstrated of God. In both places he lays out his views systematically, rather than in commentarial form.