The upper-case letter Π is used as a symbol for:
The lower-case letter π is used as a symbol for:
See also Pi (movie)
... - 21st century
Decades: 1900s 1910s 1920s 1930s 1940s - 1950s - 1960s 1970s 1980s 1990s 2000s
Years: 1953 1954 1955 1956 1957 - 1958 - 1959 1960 1961 1962 ...
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