ptosis profile image 79

Is mathematics discovered or invented?

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Keith Ham profile image61

Keith Ham says

4 years ago
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soutienscolairefr profile image60

soutienscolairefr says

4 years ago
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  • ptosis profile image

    ptosis 4 years ago

    Like the zero, the Greeks had no number for zero - did zero "exist" before the concept? It's real hard to even imagine a world without a zero.