0

# Logical proof question?

Mon 26 Dec, 2016 02:27 pm
Pick terms for A, B, and C which demonstrate that the following
syllogisms are invalid, and identify the figure of the moods.

1. AiB, CiB : AiC.
2. AoB, BaC : AaC
• Topic Stats
• Top Replies
Type: Question • Score: 0 • Views: 1,061 • Replies: 1
No top replies

fresco

2
Wed 28 Dec, 2016 01:14 am
@Penmer,
It would help if were to use standard logical connectives such as . for AND or v for OR.
However assuming i = IF a =AND, you need to choose truth values which make the conclusions false. If those values allow the conjunction of the premises to be true then the arguments are invalid
So in 1, use A=1,C=0 and in 2 use either A =0 or C=0 or both.
(If 'terms' means ' x is a cow , ' x is mortal' etc then choose appropriately)

By 'moods' I assume you mean the Latin terms for types of fallacy, which you can research yourself.
0 Replies

### Related Topics

A2K challenge! - Discussion by HexHammer
Logic Proof Help - Question by crimhaze
THE TEN COMMANDMENTS OF LOGIC - Discussion by Ragman
Derivations vs. symbolisation? - Question by collegestudent123
Logic word problem - Question by johnr
Cause of death..... - Discussion by gungasnake
Need help in defining - Question by ichishti
Predicate Logic Help - Question by splenax

1. Forums
2. » Logical proof question?