appendix Flashcards
1
Q
a is an element of set A
A
a ∈ A
2
Q
a ∈ A
A
a is an element of set A
3
Q
A ⇒ B
A
material implication: True only in the case that either A is false or B is true.
4
Q
material implication: .. implies; if .. then..
A
A ⇒ B or A → B or A ⊃ B
5
Q
A ⇒ B
A
material implication: .. implies; if .. then..
6
Q
A → B
A
material implication: .. implies; if .. then..
7
Q
A ⊃ B
A
material implication: .. implies; if .. then.. / superset
8
Q
material equivalence: … if and only if; iff; means the same as
A
A ⇔ B or A ≡ B or A ↔ B
9
Q
A ⇔ B
A
material equivalence: … if and only if; iff; means the same as
10
Q
A ≡ B
A
material equivalence: … if and only if; iff; means the same as
11
Q
A ↔ B
A
material equivalence: … if and only if; iff; means the same as
