• 1202 Leonardo Fibonacci
Fibonacci asked himself how many pairs of rabbits originated from a single pair in one year. Each pair of rabbits will produce exactly one more pair of both sexes per month which in turn would be fertile from the second month after birth.
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Pillow English Listening

• 1545 Gerolamo Cardano
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• 1571 - 1630 Johannes Kepler
Keplar observed that the relationship between a number in Fibonacci sequence and the previous number more and more closely approaches the irrational number Φ the longer the sequence is continued and Φ describes nothing other than the golden section.
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• 1815~1897 Carl Theodore Wilhelm Weierstrass
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• BC 0300? Euclid
It was the Greek mathematician Euclid who produced the first precise description of the golden section. A length is devided into two parts in such a way that the smaller part is to the larger part in the same proportion as the larger one is to the whole.
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• BC 0570 - 0495 Pythagoras
○ How many ways are there to prove the Pythagorean theorem? - Betty Fei ○ James Garfeild, Pythagoras, hypotenuse, tessellation, Euclid
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• BC 0600 Pythagoras
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◌◌◌ dimension
The number of dimensions is how many values are needed to locate points on a shape.
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