Let be a unitary representation of a group on a separable Hilbert space, and let be the smallest weakly closed algebra of bounded linear operators containing all for . Then is primary if the center of consists of only scalar operations.

# Primary Representation

## See also

Group Representation## Explore with Wolfram|Alpha

## References

Knapp, A. W. "Group Representations and Harmonic Analysis, Part II."*Not. Amer. Math. Soc.*

**43**, 537-549, 1996.

## Referenced on Wolfram|Alpha

Primary Representation## Cite this as:

Weisstein, Eric W. "Primary Representation."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/PrimaryRepresentation.html