Conversion, Obversion, Contraposition

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Last updated 11:11 PM on 12/15/24
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26 Terms

1
New cards

All S are P - Invalid

Converse(All P are S)

2
New cards

No S are P - Valid

Converse(No P are S)

3
New cards

Some S are P - Valid

Converse(Some P are S)

4
New cards

Some S are not P - Invalid

Converse(Some P are not S)

5
New cards

All S are P - Valid

Obverse(No S are non-P)

6
New cards

No S are P - Valid

Obverse(All S are non-P)

7
New cards

Some S are P - Valid

Obverse(Some S are not non-P)

8
New cards

Some S are not P - Valid

Obverse(Some S are non-P)

9
New cards

All S are P - Valid

Contrapositive(All non-P are non-S)

10
New cards

No S are P - Invalid

Contrapositive(No non-P are non-S)

11
New cards

Some S are P - Invalid

Contrapositive(Some non-P are non-S)

12
New cards

Some S are not P - Valid

Contrapositive(Some non-P are not non-S)

13
New cards

All P are S - Invalid

Converse(All S are P)

14
New cards

Some P are S - Valid

Converse by limitation(All S are P)

15
New cards

No P are S - Valid

Converse(No S are P)

16
New cards

Some S are P - Valid

Converse(Some P are S)

17
New cards

Some P are not S - Invalid

Converse(Some S are not P)

18
New cards

No S are non-P - Valid

Obverse(All S are P)

19
New cards

All S are non-P - Valid

Obverse(No S are P)

20
New cards

Some S are not non-P - Valid

Obverse(Some S are P)

21
New cards

Some S are non-P - Valid

Obverse(Some S are not P)

22
New cards

All non-P are non-S - Valid

Contrapositive(All S are P)

23
New cards

No non-P are non-S - Invalid

Contrapositive(No S are P)

24
New cards

Some non-P are not non-S - Valid

Contrapositive by limitation(No S are P)

25
New cards

Some non-P are non-S - Invalid

Contrapositive(Some S are P)

26
New cards

Some non-P are not non-S - Valid

Contrapositive(Some S are not P)