Should the number “pi” be capitalized and written as “Pi”?





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I do understand that the Greek letter used as a symbol for pi should not be capitalized, but I don't know an easy way to write the symbol for Pi, so I want to spell it in English.



The sentence that looked weird to me was



Jeff Dean's PIN is the last 4 digits of pi. 


Seems like a proper noun.










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  • Which letter do you want, the small one or the cap?
    – Hot Licks
    9 mins ago










  • The commonly known 3.1415 one -- not the capital PI used for the product of a series.
    – Noumenon
    7 mins ago












  • Isn't this question answered by the dictionary?
    – Laurel
    1 min ago

















up vote
0
down vote

favorite
1












I do understand that the Greek letter used as a symbol for pi should not be capitalized, but I don't know an easy way to write the symbol for Pi, so I want to spell it in English.



The sentence that looked weird to me was



Jeff Dean's PIN is the last 4 digits of pi. 


Seems like a proper noun.










share|improve this question
























  • Which letter do you want, the small one or the cap?
    – Hot Licks
    9 mins ago










  • The commonly known 3.1415 one -- not the capital PI used for the product of a series.
    – Noumenon
    7 mins ago












  • Isn't this question answered by the dictionary?
    – Laurel
    1 min ago













up vote
0
down vote

favorite
1









up vote
0
down vote

favorite
1






1





I do understand that the Greek letter used as a symbol for pi should not be capitalized, but I don't know an easy way to write the symbol for Pi, so I want to spell it in English.



The sentence that looked weird to me was



Jeff Dean's PIN is the last 4 digits of pi. 


Seems like a proper noun.










share|improve this question















I do understand that the Greek letter used as a symbol for pi should not be capitalized, but I don't know an easy way to write the symbol for Pi, so I want to spell it in English.



The sentence that looked weird to me was



Jeff Dean's PIN is the last 4 digits of pi. 


Seems like a proper noun.







capitalization proper-nouns






share|improve this question















share|improve this question













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edited 6 mins ago

























asked 27 mins ago









Noumenon

14117




14117












  • Which letter do you want, the small one or the cap?
    – Hot Licks
    9 mins ago










  • The commonly known 3.1415 one -- not the capital PI used for the product of a series.
    – Noumenon
    7 mins ago












  • Isn't this question answered by the dictionary?
    – Laurel
    1 min ago


















  • Which letter do you want, the small one or the cap?
    – Hot Licks
    9 mins ago










  • The commonly known 3.1415 one -- not the capital PI used for the product of a series.
    – Noumenon
    7 mins ago












  • Isn't this question answered by the dictionary?
    – Laurel
    1 min ago
















Which letter do you want, the small one or the cap?
– Hot Licks
9 mins ago




Which letter do you want, the small one or the cap?
– Hot Licks
9 mins ago












The commonly known 3.1415 one -- not the capital PI used for the product of a series.
– Noumenon
7 mins ago






The commonly known 3.1415 one -- not the capital PI used for the product of a series.
– Noumenon
7 mins ago














Isn't this question answered by the dictionary?
– Laurel
1 min ago




Isn't this question answered by the dictionary?
– Laurel
1 min ago















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