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Single Idea 15375

[filed under theme 4. Formal Logic / E. Nonclassical Logics / 8. Intensional Logic ]

Full Idea

The common feature of every designating term is that designation may change from state to state - thus it can be formalized by a function from states to objects.

Gist of Idea

If terms change their designations in different states, they are functions from states to objects

Source

Melvin Fitting (Intensional Logic [2007], 3)

Book Ref

'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.8


A Reaction

Specifying the objects sounds OK, but specifying states sounds rather tough.


The 7 ideas from Melvin Fitting

Classical logic is deliberately extensional, in order to model mathematics [Fitting]
λ-abstraction disambiguates the scope of modal operators [Fitting]
If terms change their designations in different states, they are functions from states to objects [Fitting]
Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting]
Definite descriptions pick out different objects in different possible worlds [Fitting]
Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting]
Justication logics make explicit the reasons for mathematical truth in proofs [Fitting]