Combining Texts
Ideas for
'works', 'Naming and Necessity lectures' and 'Modal Logics and Philosophy'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
11 ideas
4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic
|
7786
|
Propositional logic handles negation, disjunction, conjunction; predicate logic adds quantifiers, predicates, relations [Girle]
|
|
7798
|
There are three axiom schemas for propositional logic [Girle]
|
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / a. Symbols of PL
|
7799
|
Proposition logic has definitions for its three operators: or, and, and identical [Girle]
|
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
|
7797
|
Axiom systems of logic contain axioms, inference rules, and definitions of proof and theorems [Girle]
|
4. Formal Logic / D. Modal Logic ML / 1. Modal Logic
|
10559
|
Kripke's modal semantics presupposes certain facts about possible worlds [Kripke, by Zalta]
|
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / g. System S4
|
7794
|
There are seven modalities in S4, each with its negation [Girle]
|
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5
|
7793
|
◊p → □◊p is the hallmark of S5 [Girle]
|
|
7795
|
S5 has just six modalities, and all strings can be reduced to those [Girle]
|
4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic
|
7787
|
Possible worlds logics use true-in-a-world rather than true [Girle]
|
|
7788
|
Modal logic has four basic modal negation equivalences [Girle]
|
|
7796
|
Modal logics were studied in terms of axioms, but now possible worlds semantics is added [Girle]
|