Stefan Banach [2]

Stefan Banach (1892-1945)

Subject: no
Face value: 2 pln
Alloy: (CuAl5Zn5Sn1) NG
Diameter: 27 mm
Weight: 8.15 g
Finish: standard
Mintage: 800000 pcs
On the edge: an inscription, NBP, repeated eight times, every second one inverted by 180 degrees, separated by stars
Additional: no
Date of issue: 2012-04-03
Issue price: 2 pln

In the centre, a stylised bust of Stefan Banach. On the left, a graph of linear operator. Below, an inequality characterising a condition concerning linear operators in Banach spaces. Underneath, an inscription: STEFAN/BANACH. At the bottom, an inscription: 1892-1945.

Designer: Robert Kotowicz

An image of the Eagle established as the state emblem of the Republic of Poland. On the sides of the Eagle, the notation of the year of issue: 20-12. Under the Eagle, inscription: ZŁ 2 ZŁ. Along the rim, inscription: RZECZPOSPOLITA POLSKA (Republic of Poland), preceded and followed by six pearls. The Mint’s mark: M/W, under the Eagle, on the right hand side.

Designer: Ewa Tyc-Karpińska

Stefan Banach (1892-1945)
2012-04-03, National Bank of Poland

Ordinance of President
National Bank of Poland

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Article linked with this coin

Stefan Banach (1892-1945) was the greatest Polish mathematician and co-founder of the famous Polish School of Mathematics developed in the interwar period of 1918-1939. One of the major prizes of the Polish Mathematical Society (which he co-founded and chaired in the years 1939-1945) and the medal of the Polish Academy of Sciences awarded alternately to either a Polish or a foreign mathematician every year, are named after Stefan Banach. His name is associated with a number of mathematical concepts and theorems, in particular the concept of Banach spaces, the Hahn-Banach theorem and the Banach fixed-point theorem (to which the images on the collector coins are linked). These concepts and theorems are presently not only known to professional mathematicians, but also to students ...

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