alethic modality
1Linguistic modality — For modality signaled with grammatical affixes, see Grammatical mood. Grammatical categories Animacy Aspect Case Clusivity Definiteness …
2Deontic modality — (abbreviated deo) is a linguistic modality that indicates how the world ought to be,[1] according to certain norms, expectations, speaker desire, etc. In other words, a deontic expression indicates that the state of the world (where world is… …
3Modal logic — is a type of formal logic that extends classical propositional and predicate logic to include operators expressing modality. Modals words that express modalities qualify a statement. For example, the statement John is happy might be qualified by… …
4Modal realism — is the view, notably propounded by David Kellogg Lewis, that all possible worlds are as real as the actual world. It is based on the following tenets: possible worlds exist; possible worlds are not different in kind from the actual world;… …
5applied logic — Introduction the study of the practical art of right reasoning. The formalism (formal logic) and theoretical results of pure logic can be clothed with meanings derived from a variety of sources within philosophy as well as from other… …
6Modal operator — In modal logic, a modal operator is an operator which forms propositions from propositions. In general, a modal operator has the formal property of being non truth functional, and is intuitively characterised by expressing a modal attitude (such… …
7Logic — For other uses, see Logic (disambiguation). Philosophy …
8Evidentiality — Grammatical categories Animacy Aspect Case Clusivity Definiteness Degree of comparison Evidentiality …
9Grammatical mood — Grammatical categories Animacy Aspect Case Clusivity Definiteness Degree of comparison Evidentiality Focus …
10Irrealis mood — Irrealis moods (abbreviated irr) are the main set of grammatical moods that indicate that a certain situation or action is not known to have happened as the speaker is talking. Every language has a formula for the unreal. The Indian languages of… …
