Pin Group - Name

Name

The name was introduced in (Atiyah, Bott & Shapiro 1964, page 3, line 17), where they state "This joke is due to J-P. Serre". It is a back-formation from Spin: "Pin is to O(n) as Spin is to SO(n)", hence dropping the "S" from "Spin" yields "Pin".

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Famous quotes containing the word name:

    “What is it? a learned man
    Could give it a clumsy name.
    Let him name it who can,
    The beauty would be the same.”
    —Alfred Tennyson (1809–1892)

    “Name any name and then remember everybody you ever knew who bore than name. Are they all alike. I think so.”
    —Gertrude Stein (1874–1946)