Formal Logic Rules Flashcards Preview

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Flashcards in Formal Logic Rules Deck (54):
1

If

Sufficient

2

All

Sufficient

3

Any

Sufficient

4

Every

Sufficient

5

Each

Sufficient

6

When

Sufficient

7

Whenever

Sufficient

8

Wherever

Sufficient

9

The only

Sufficient

10

Then

Necessity

11

Requires

Necessity

12

Guarantees

Necessity

13

Must

Necessity

14

Necessary

Necessity

15

Bound to lead to

Necessity

16

Are destined to

Necessity

17

Only if

Necessity

18

Results in

Necessity

19

Produces

Necessity

20

Sure to

Necessity

21

Always

Necessity

22

Unless

Necessity
Negate the sufficient

OR use (IF NOT) and do not negate

23

Depends on

Necessity

24

Without

Necessity
Negate the sufficient

OR use (IF NOT) and do not negate

25

No

Mutually Exclusive

26

Incapable

Mutually Exclusive

27

Impossible

Mutually Exclusive

28

Cannot

Mutually Exclusive

29

None

Mutually Exclusive

30

Neither...nor

Mutually Exclusive

31

Never

Mutually Exclusive

32

In order to

Sufficient

33

People who

Sufficient

34

Only

Necessary

35

Except

Necessary

36

Until

Necessary

37

X ---> ~Y

Can NEVER have both. XY not possible. Limits maximum numbers
Mutually exclusive relationship
Write down NEVER-XY
Positive trigger, negative result

38

~X ---> Y

MUST have at least one. Can have both. Limits the min numbers.

39

Unless

IS NOT/IF NOT
best used at beginning

40

Without

IF NOT
Best used at beginning

41

Neither X nor Y

~X AND ~Y

42

But

AND

43

No one

Neg Ness (put on right)

44

Negatives

On the right (Ness)

45

Never

on the right (Ness)

46

OR

Cookies or (either) icecream, means:
Just cookies,
Just icecream
or both

Needs to say "but not both" (just one or other other)
Or "Exactly one"

47

Anyone

Sufficient

48

If, but only if

Biconditional relationship
X Y
Each is a sufficient and necessary for the other term

49

In order for...

Necessary

50

need

Sufficient

51

A ---> B
A ---> C

A ---> B and C

52

A ---> B
C ---> B

A or C ---> B

53

A --->B
B --->C

A --->C

54

is

necessary