Video: How do we know that 1+1=2? A journey into the foundations of math.

AskAMathematician.com presents a lecture on the foundations of math and whether we really can know that one plus one equals two. How was math invented? Where does mathematics come from? Are the axioms of math provable? Is math true? Can it be proven on purely logical grounds? Can it be demonstrated empirically? Can it only be justified from a pragmatic perspective? These are some of the questions discussed in the three videos below.

Part 1 of 3:

Part 2 of 3:

Part 3 of 3:

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