Conditional Indicators Flashcards
if
Sufficient
A → B
Contrapositive
if what?
when(ever)
Sufficient
A → B
Contrapositive
when(ever) what?
any(time)
Sufficient
A → B
Contrapositive
any(time) what?
all
Sufficient
A → B
Contrapositive
all what?
every(time)
Sufficient
A → B
Contrapositive
every(time) what?
in order to
Sufficient
A → B
Contrapositive
in order to what?
people who
Sufficient
A → B
Contrapositive
people who what?
each
Sufficient
A → B
Contrapositive
each what?
then
Necessary
A → B
Contrapositive
then what?
must
Necessary
A → B
Contrapositive
must what?
necessary
Necessary
A → B
Contrapositive
what’s necessary?
required
Necessary
A → B
Contrapositive
what’s required?
only (if)
Necessary
A → B
Contrapositive
only (if) what?
depends
Necessary
A → B
Contrapositive
depends on what?
need (to)
Necessary
A → B
Contrapositive
need (to) what?
have to
Necessary
A → B
Contrapositive
have to what?
essential
Necessary
A → B
Contrapositive
what’s essential?
precondition
Necessary
A → B
Contrapositive
what’s the precondition?
and
And/Or/Neither-Nor
A + B → C (vertical)
Contrapositive
or
And/Or/Neither-Nor
A → B or C (vertical)
Contrapositive
neither… nor…
And/Or/Neither-Nor
=not this and not that:
A → ~B + ~ C (vertical)
Contrapositive
if and only if
If and Only If (Together)
double must arrow: ↔
Contrapositive: A ↔ B = ~A ↔ ~B
if but only if
If and Only If (Together)
double must arrow: ↔
Contrapositive: A ↔ B = ~A ↔ ~B
all and only
If and Only If (Together)
double must arrow: ↔
Contrapositive: A ↔ B = ~A ↔ ~B
but not otherwise
If and Only If (Together)
double must arrow: ↔
Contrapositive: A ↔ B = ~A ↔ ~B
when and only when
If and Only If (Together)
double must arrow: ↔
Contrapositive: A ↔ B = ~A ↔ ~B
Either…. or….
Either/Or (Inclusion)
~A → B
Contrapositive
no
No (Exclusion)
A → ~B
Contrapositive
none
No (Exclusion)
A → ~B
Contrapositive
nobody
No (Exclusion)
A → ~B
Contrapositive
never
No (Exclusion)
A → ~B
Contrapositive
unless
Unless (Exception)
~A (if not normal) → B
Contrapositive
except
Unless (Exception)
~A (if not normal) → B
Contrapositive
until
Unless (Exception)
~A (if not normal) → B
Contrapositive
without
Unless (Exception)
without = unless I have
~A (if not normal) → B
Contrapositive
some
Some (Partial)
A ←s→ B
-
few
Some (Partial)
A ←s→ B
-
many
Some (Partial)
A ←s→ B
-
at least one
Some (Partial)
A ←s→ B
-
several
Some (Partial)
A ←s→ B
-
not all
(fancy some)
Some (Partial)
=some are not:
A ←s→ ~B
-
most
Most (Partial)
A -m→ B
A ←s→ B
usually
Most (Partial)
A -m→ B
A ←s→ B
probably
Most (Partial)
A -m→ B
A ←s→ B
mostly
Most (Partial)
A -m→ B
A ←s→ B
more often than not
Most (Partial)
A -m→ B
A ←s→ B
if not both
And/Or/Neither-Nor
~ A or ~ B —> C
Contrapositive
If A and B does not both occur, then C.
=
If not A or not B, then C.
