Yes - that symbol is generally used to restrict a function to a smaller domain.

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- Jan 12th 2011, 08:18 PM #1
## What does \upharpoonright mean?

Hello friends,

While reading the book*Representations of Finite and Compact Groups*by Barry Simon I came upon the notation which he fails to define. From context I would guess it means "restriction" but I can't be sure. For example here's some context

Let be a representation of on and suppose that is invariant under . Then, and define representations and and is equivalent to

- Jan 13th 2011, 03:51 AM #2

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- Jan 13th 2011, 10:34 AM #3

- Jan 13th 2011, 10:40 AM #4

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