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Modal Logic - http://www.clas.ufl.edu/users/jzeman/modallogic/
Online book by J. Jay Zeman. |
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Modal Logic - http://open-site.org/Science/Mathematics/Logic/Modal_Logic/
Open Encyclopedia article. |
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Modal Logic - http://plato.stanford.edu/entries/logic-modal/
Originally the study of deductive behavior of the expressions `it is necessary that' and `it is possible that', now also includes logics for belief, tense, the deontic (moral) expressions. From the Stanford Encyclopedia, by James W. Garson. |
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Mally's Deontic Logic - http://plato.stanford.edu/entries/mally-deontic/
Discussion of Ernst Mally's logic of obligation; from the Stanford Encyclopedia by Gert-Jan Lokhorst. |
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Computational Tools for Modal Logic - http://www.cs.man.ac.uk/~schmidt/tools/
Resources collected by Renate Schmidt. |