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...tudies the application of logical methods to philosophical problems, often in the form of extended logical systems like [[modal logic]]. But other theori ...on whether the criteria of valid inference and logical truth are specified in terms of syntax or semantics. ...

...47.jpg|alt=|thumb|[[Leonardo da Vinci|Leonardo]] wrote aerodynamic studies in a notebook eventually titled <nowiki>''</nowiki>[[Codex on the Flight of Bi ...reospecific Polymerization: A revolution in polymer synthesis has occurred in the last decade. |journal=Science |date=14 August 1964 |volume=145 |issue=3 ...