What actually IS a number - Pictures, Plato & The Mathematical Realm Philosophy of Mathematics

What actually is a number? Do numbers and mathematical objects actually exist, or is maths something which has simply been invented by mankind and has no independent existence, out there in the real world? This video looks at Plato, his philosophy of maths, and the mathematical realm and what that implies for the notion of mathematical “truth”. 0:00 Introduction 1:29 Picture Proof 1 3:02 Picture Proof 2 8:05 Picture Proof 3 8:19 Plato & The Mathematical Realm