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Oleksandr Liapunov

The commemorative coin is dedicated to the 150th anniversary of birth of Oleksandr Liapunov (1857--1918) – a mathematician and mechanic, professor of the Kharkiv University (1885—1902) and an academician of the Petersburg Academy of Sciences from 1901, whose works were related to celestial mechanics, mathematics, physics and probability theory. Issued into circulation on March 12, 2007.
Ukraine 2007 Oleksandr Liapunov Nickel silver
Obverse: 
On the coin obverse above there is the Small National Emblem of Ukraine, under which the – inscription - НАЦІОНАЛЬНИЙ / БАНК УКРАЇНИ (National Bank of Ukraine) and geometric presentation of a celestial mechanics problem. Below there are inscriptions 2 ГРИВНІ / 2007 (2 hryvnias) and the logo of the National Bank of Ukraine Mint.
Reverse: 
On the coin reverse Oleksandr Liapunov is portrayed, to the right of the portrait there are the arciform inscriptions: ОЛЕКСАНДР ЛЯПУНОВ (Oleksandr Liapunov) / 1857 - 1918.
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Catalog ID: 
UA370CM1
Krause ID: 
KM# 430
Value: 
€4.5
Mintage: 
35000
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Weight: 
12.8g
Diameter: 
31mm
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Product name: Ukraine 2007 Oleksandr Liapunov Nickel silver
Price: EUR4.54