Main Connectives The main connective of a sentence is the connective outside of any parentheses.

Main Connectives The main connective of a sentence is the connective outside of any parentheses. P&(Q&R)

Main Connectives The main connective of a sentence is the connective outside of any parentheses. P&(Q&R)

Main Connectives The main connective of a sentence is the connective outside of any parentheses. P&(Q&R)

Main Connectives The main connective of a sentence is the connective outside of any parentheses. P&(Q&R) ((S>T)&R)>U

Main Connectives The main connective of a sentence is the connective outside of any parentheses. P&(Q&R) ((S>T)&R)>U

Main Connectives The main connective of a sentence is the connective outside of any parentheses. P&(Q&R) ((S>T)&R)>U

Basic Principle for all the Rules: Rules apply to main connectives only! Main Connectives

1) P&(Q&R) 2) P&Q 1 &O 3) R 1 &O Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only!

WRONG Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! 1) P&(Q&R) 2) P&Q 1 &O 3) R 1 &O

WRONG Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! 1) P&(Q&R) 2) P&Q 1 &O 3) R 1 &O

Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! CORRECT 1) P&(Q&R) 2) P 1 &O 3) Q&R 1 &O

Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! 4) (L&E)>P 5) L4 &O 6) E>P4 &O

Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! WRONG 4) (L&E)>P 5) L4 &O 6) E>P4 &O

Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! WRONG 4) (L&E)>P 5) L4 &O 6) E>P4 &O

Main Connectives Basic Principle for all the Rules: Rules apply to main connectives only! Line (4) is a conditional. Its main connective is > not & ! So &O cannot be applied! 4) (L&E)>P 5) L4 &O 6) E>P4 &O WRONG For more click here