Catalog
See full images - free registration
Continue with Google - no registration!
or register with email
Why register? Just to keep bots out of our catalog. Your email stays private - we will never share it or send you anything uninvited. We guarantee you that!
7 500 000 Lira Cahit Arf
| Issuer | Turkish State Mint |
|---|---|
| Year | 2001 |
| Type | Non-circulating coin |
| Value | Log in to see details |
| Currency | Log in to see details |
| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | Log in to see details |
| Shape | Log in to see details |
| Technique | Log in to see details |
| Orientation | Log in to see details |
| Engraver(s) | Log in to see details |
| In circulation to | Log in to see details |
| Reference(s) | Log in to see details |
| Obverse description | Log in to see details |
|---|---|
| Obverse script | Latin |
| Obverse lettering | Log in to see details |
| Reverse description | Log in to see details |
| Reverse script | Log in to see details |
| Reverse lettering | Log in to see details |
| Edge | Log in to see details |
| Mint | Log in to see details |
| Mintage | 2001 - Proof - 2,044 |
| Additional information |
Cahit Arf, the mathematician this coin honors, developed what is now called the Arf invariant in 1941 — a contribution to algebraic topology that remains embedded in modern K-theory and the mathematics underlying certain cryptographic systems. He published the work while based in Istanbul, having returned from Göttingen where he trained under Helmut Hasse. The Turkish academic establishment claimed him enthusiastically, and his face later appeared on the 10 lira banknote series beginning in 2009.
The denomination — 7,500,000 lira — reflects Turkey's currency in the final throes of its chronic inflation crisis, just two years before the redenomination that stripped six zeros and introduced the New Turkish Lira in 2005.