Combining Philosophers

All the ideas for Hastings Rashdall, Rod Girle and Nicholas Rescher

expand these ideas     |    start again     |     specify just one area for these philosophers

---

23 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

7798	There are three axiom schemas for propositional logic [Girle]

7786	Propositional logic handles negation, disjunction, conjunction; predicate logic adds quantifiers, predicates, relations [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 / 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]

7796	Modal logics were studied in terms of axioms, but now possible worlds semantics is added [Girle]

7788	Modal logic has four basic modal negation equivalences [Girle]

5. Theory of Logic / B. Logical Consequence / 7. Strict Implication

7789	Necessary implication is called 'strict implication'; if successful, it is called 'entailment' [Girle]

5. Theory of Logic / H. Proof Systems / 5. Tableau Proof

7790	If an argument is invalid, a truth tree will indicate a counter-example [Girle]

7. Existence / B. Change in Existence / 2. Processes

22626

Process philosophy insists that processes are not inferior in being to substances [Rescher]

9. Objects / C. Structure of Objects / 8. Parts of Objects / a. Parts of objects

10650

In the military, persons are parts of parts of large units, but not parts of those large units [Rescher]

10. Modality / A. Necessity / 3. Types of Necessity

7800	Analytic truths are divided into logically and conceptually necessary [Girle]

10. Modality / B. Possibility / 1. Possibility

7801	Possibilities can be logical, theoretical, physical, economic or human [Girle]

10. Modality / E. Possible worlds / 1. Possible Worlds / a. Possible worlds

7792	A world has 'access' to a world it generates, which is important in possible worlds semantics [Girle]

16. Persons / B. Nature of the Self / 2. Ethical Self

1457	Morality requires a minimum commitment to the self [Rashdall]

22. Metaethics / B. Value / 1. Nature of Value / e. Means and ends

6674	All moral judgements ultimately concern the value of ends [Rashdall]

23. Ethics / E. Utilitarianism / 6. Ideal Utilitarianism

6673	Ideal Utilitarianism is teleological but non-hedonistic; the aim is an ideal end, which includes pleasure [Rashdall]

27. Natural Reality / A. Classical Physics / 1. Mechanics / a. Explaining movement

20365

We only see points in motion, and thereby infer movement [Rescher]

28. God / B. Proving God / 2. Proofs of Reason / c. Moral Argument

1458	Conduct is only reasonable or unreasonable if the world is governed by reason [Rashdall]

1459	Absolute moral ideals can't exist in human minds or material things, so their acceptance implies a greater Mind [Rashdall, by PG]