Press the right key for the next slide (or swipe left)

also ...

Press the left key to go backwards (or swipe right)

Press n to toggle whether notes are shown (no equivalent if you don't have a keyboard)

Press m or double tap to see a menu of slides

 

↔ : truth tables and rules

ABA → BB → A(A → B) ∧ (B → A)A ↔ B
TTTTTT
TFFTFF
FTTFFF
FFTTTT

1.

A ↔ B

2.

A

3.B↔Elim: 1,2
1.

A ↔ B

2.

B

3.A↔Elim: 1,2

How do I intro ↔?

ABA ↔ B
TTT
TFF
FTF
FFT
ABA → B
TTT
TFF
FTT
FFT
1.

A

2....
3.B
4.

B

5....
6.A
7.A ↔ B
1.

A

2....
3.B
4.A → B
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