Stamp: Nikola Obreshkov, Mathematician (Bulgaria 2021)

Nikola Obreshkov, Mathematician (Bulgaria 2021)

17 December (Bulgaria ) within release Bulgarian Scientists (2021) goes into circulation Stamp Nikola Obreshkov, Mathematician face value 0.65 Bulgarian lev

Stamp Nikola Obreshkov, Mathematician in catalogues
Colnect codes: Col: BG 2021-34A

Stamp is square format.

Also in the issue Bulgarian Scientists (2021):

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Stamp Nikola Obreshkov, Mathematician in digits
Country: Bulgaria
Date: 2021-12-17
Print: Offset lithography
Emission: Commemorative
Format: Stamp
Face Value: 0.65 Bulgarian lev

Stamp Nikola Obreshkov, Mathematician it reflects the thematic directions:

One of the earliest known mathematicians was Thales of Miletus (c. 624 – c. 546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed.He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales's theorem.

Stamp, Nikola Obreshkov, Mathematician, Bulgaria,  , Mathematicians