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Mexico, 40 cent, 1940 Scott: Finger counting |
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Egypt, 10m, 1961 Scott: 540 194 Education Day with Triangle |
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Finland, 0.40, 1969 Scott: Lots of mathematical symbols |
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Rwanda, 30c, 1974 Scott: 603 A91 Knot based mathematics used by Incas |
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India, 2r, 1977, Scott: 781 A488 Hexagon insrcibed in a cirle |
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Czechoslovakia, 2r, 1987, Scott: Surveying work and Computer graphics |
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Czechoslovakia, 2r, 1987, Scott: 781 A488 Prague's astronmical Clock, computer graphics |
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Macao Knights tour, stamp is partial of a 16x16 checkerboard |
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India, 2004 Scott: 2067 A1405 Triangulation of India |
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Liechtenstein, 85, 2004 Scott: A Mersenne Prime number found on November 14, 2001 |
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Macao, 2004 The five platonic solids |
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India, 5r, 2009 Scott: 2391 A1709 Indian Mathematical Society |
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Australia, $1, 2016
Celebration of Decimal currency |
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Germany, 70, 2016
Crystals, intersecting cubes |
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Spain, 1.45, 2020
Teaching numbers |
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Thai, 2015 Thai numbers |