Category:Mathematical integration symbols on stamps

Media in category "Mathematical integration symbols on stamps"

The following 4 files are in this category, out of 4 total.

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  Pafnuty Chebyshev 2021 stamp of Russia.jpg 737 × 527; 185 KB
  
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  Stamp Soviet Union 1976 4610.jpg 322 × 451; 90 KB
  
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  The Soviet Union 1966 CPA 3310 stamp (The International Congress of Mathematicians (ICM) (16-26.08, Moscow). Emblem - Integral Symbol and Globe. Sum and Union Symbols).jpg 964 × 679; 107 KB
  
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  The Soviet Union 1966 CPA 3310 stamp (The International Congress of Mathematicians (ICM) (16-26.08, Moscow). Emblem - Integral Symbol and Globe. Sum and Union Symbols).png 964 × 679; 1.74 MB