Types of Eduction: a. conversion 1. simple conversion 2. partial conversion b. obversion c. contraposition 1. simple contraposition 2. complete contraposition d. inversion 1. simple inversion 2. complete inversion

1. EDUCTION
TYPES APPLICABLE TO: RULES
CONVERSION
Simple Conversion
o Subject Predicate
o Quality
Quantity
Partial Conversion
o Subject Predicate
o Quantity– Change
U to P or P to U
o Quality- Retain
Obversion
o Quality– Change
Positive tonegativeor
Negative topositive
o Predicate - Contradict
o Quantity
o subject
CONTRAPOSITION
Simple Contraposition
Complete Contraposition
A E
I O
A E
I O
A E
I O
A E
I O
given obversion conversion
A E
I O
given obversion conversion obversion
Retain
Retain

2. EDUCTION
INVERSION
Simple Inversion
Complete Inversion
A E
I O
contradict
the subject
change the
quantity
change the
quality
retainthe
predicate
A E
I O
contradict the
subject
change the
quantity
retainthe
quality
contradict the
predicate