S={x|xāˆ‰x}ā“šŸ’„

#set theory #russells paradox #foundations of mathematics #self-reference #contradiction #naive set theory #mathematical logic

šŸ”„(šŸš«šŸ”„)ā“āž”ļøšŸ’„

#self-reference loop #paradox #contradiction #russells paradox #set theory problem #inclusion/exclusion

šŸ“¦āˆ‰šŸ“¦ā†”ļøšŸ“¦āˆˆšŸ“¦šŸ¤Æ

#set membership #paradox #self-reference #contradiction #abstract sets #logic puzzle #russells paradox

Pā†”ļøĀ¬Pā“šŸ¤Æ

#logical contradiction #paradox #self-reference #foundations of logic #russells paradox #liar paradox related #propositional logic