image text translation
EBSMA
rice
IBARBER SHOP
In this village
Except for those who shave their own beards.
I shave everyone’s beards.
4?
Who thinks they are the best in Seville, Spain?
There is no barber.
He often boasted this to his guests.
“In the village of righteousness, everyone except those who know how to purge themselves.
‘I’ll pay you back for your troubles’
However, a customer who was quietly listening to this suddenly became curious.
Yes.
‘How can a doctor cut his own hair on his own?’
What does this seemingly absurd paradox mean?
image text translation
Set X frame is defined as follows.
X = { X&X}
In this case, if X & Since the condition is satisfied, X C X becomes:
Conversely, if X &
all:
X EX > X &
that famous
Russell’s Paradox
With this theory, he
At the time, all the mathematicians were talking about Lee Seon-jok.
It became.