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Many-worlds theory of truth
author: Alexander Boldachev,
The logical world is a set of propositions, united by common principles of establishing their truth. The many-worlds theory asserting that the truth of any proposition in any given logical world is always established by comparing it with standard propositions in this world – directly or via the procedure of transferring the truth.


Arabic and Islamic Philosophy and Sciences: Method and Truth

author: Hany Moubarez,
What are Arabic and Islamic philosophy and sciences? How and where did they come about? I am trying in this preface to provide a short and brief answer to those two questions. Having done this, I sketch the contents of five papers trying to study Arabic and Islamic philosophy and sciences from its perspective to method and truth.

Three Notes on the Method of Analysis and Synthesis
in its Ancient and (Arabic) Medieval Contexts

author: Hany Moubarez,
Most historians and philosophers of philosophy and history of mathematics hold one interpretation or the other of the nature of the method of analysis and synthesis in itself and in its historical development. In this paper, I am trying to prove – through three points – that, in fact, there were two understandings of that method in Greek Mathematics and philosophy, and which were reflected in Arabic mathematical science and philosophy; this reflection is considered as proof also of this double nature of that method. Thus, we have to rethink the nature of Arabic philosophy systems.

The Status of Conditional Syllogism in Syllogistics

author: Yagoubi Mahmmoud, Moussa Fatahine,
The form of the conditional syllogism resembles that of the categorical syllogism, while its subject matter is at least a conditional premise, but its conclusion is always conditional conjunctive or disjunctive. This mixed structure to which we apply the rules of the categorical syllogism, is a structure of which Aristotle did not have an idea, and which the Stoics did not conceive, and which the non-Arabian logicians did not know until in modern times. But what we have to notice here is the putting of a conditional matter in the form of the categorical syllogism, and it is this kind of hybridization, if we dare to say, which generated this mixed structure which appeared for the first time in the history of logic in the treatise on the logic of Ibn Sina and which can be considered a discovery by this author until proof to the contrary, and that the ancient Arabian logicians have taken the habit of exhibiting in their treatises.