DeMorgan's Laws re WITHOUT and UNLESS
Posted: Sun Sep 15, 2024 4:13 pm
Hello,
I have two questions regarding properly interpreting/applying DeMorgan's laws. DeMorgan's laws hold the following:
The negation of "A and B" is the same as "not A or not B."
The negation of "A or B" is the same as "not A and not B."
or
not (A or B) = (not A) and (not B)
not (A and B) = (not A) or (not B)
Sentence #1 to examine: The person's transition to a happy state of being cannot take place WITHOUT the basin OR a desire for it.
Question 1: What is the correct starting position in properly applying DeMorgan's laws?
OPTION A: without(basin or desire) then cannot take place. [Yields: if not basin AND if not desire --> transition cannot take place; Contrapositive: if transition takes place --> basin OR desire]
OPTION B: without basin or without desire then cannot take place. [Yields: if not basin OR if not desire --> transition cannot take place; Contrapositive: if transition takes place --> basin AND desire]
Sentence #2 to examine: Unless a person comes out of water AND G, the person enter into a happy state of being.
Question 2: What is the correct starting position in properly applying DeMorgan's laws?
OPTION A: if not(water AND G). [Yields: if not water OR if not G--> not enter happy state; Contrapositive: if enter happy state --> water AND G]
OPTION B: if not water AND if not G. [Yields: if not water AND if not G --> not enter happy state; Contrapositive: if enter happy state --> water OR G]
BONUS QUESTION #3
After hearing answers to the above two questions, I will pose an additional bonus question.
Looking forward to reading the responses!
I have two questions regarding properly interpreting/applying DeMorgan's laws. DeMorgan's laws hold the following:
The negation of "A and B" is the same as "not A or not B."
The negation of "A or B" is the same as "not A and not B."
or
not (A or B) = (not A) and (not B)
not (A and B) = (not A) or (not B)
Sentence #1 to examine: The person's transition to a happy state of being cannot take place WITHOUT the basin OR a desire for it.
Question 1: What is the correct starting position in properly applying DeMorgan's laws?
OPTION A: without(basin or desire) then cannot take place. [Yields: if not basin AND if not desire --> transition cannot take place; Contrapositive: if transition takes place --> basin OR desire]
OPTION B: without basin or without desire then cannot take place. [Yields: if not basin OR if not desire --> transition cannot take place; Contrapositive: if transition takes place --> basin AND desire]
Sentence #2 to examine: Unless a person comes out of water AND G, the person enter into a happy state of being.
Question 2: What is the correct starting position in properly applying DeMorgan's laws?
OPTION A: if not(water AND G). [Yields: if not water OR if not G--> not enter happy state; Contrapositive: if enter happy state --> water AND G]
OPTION B: if not water AND if not G. [Yields: if not water AND if not G --> not enter happy state; Contrapositive: if enter happy state --> water OR G]
BONUS QUESTION #3
After hearing answers to the above two questions, I will pose an additional bonus question.
Looking forward to reading the responses!