Theories

Question 1

what is a set

Answer 1

collection of any entities

Question 2

fundamental concepts of set

Answer 2

set
membership relation E

Question 3

irreflexivity of set

Answer 3

no set is a member of itself

Question 4

anti-symmetry of set

Answer 4

if X E Y, then Y is not E X

Question 5

6 parts of a theory for Aristotle

Answer 5

1. Dom (set of actual entities)
2. Enn (concepts)
3. fun (-damental concepts)
4. def (-initions)
5. princ(-iples)
6. Thms (Theorems)

Question 6

Theorems

Answer 6

formed by axioms, postulates & definitions

Question 7

qualities of propositions in domain

Answer 7

universal, necessary & self-evident

Question 8

three components new theory

Answer 8

ontology
ennology
nomology

Question 9

Ontology

Answer 9

descriptions of the entities T is about

Question 10

ennology

Answer 10

fundamental & defined concepts of T, may include which concepts represent which features
–> relation to observable/ measurable factors

Question 11

nomology

Answer 11

postulates about how the domain-members behave & relate

Question 12

Few differences between classical & modern account of theory

Answer 12

1. new theory does require connection to observation/ measurable factors (Enn(T) )
2. post(T) do not have to be true, can have false theories
3. do not need to have explicit axioms for theory T to be applicable
4. Post(T) instead of princ (Theta)

Question 13

Difference principle

Answer 13

D(T1,T2) = denn (T1+T2) + dpost (T1+ T2) + Dont (T1+ T2)
(ennology, postulates, ontology)
If D(T1,T2) = 0, then T1=T2