Assertion: essential spectrum | /r/HasProperty | \sigma _
Facets:
Source sentences:
text: The essential spectrum σ e s s , 1 ( A ) {\displaystyle \sigma _{\mathrm {ess} ,1}(A)
text: The essential spectrum σ e s s , 1 ( A ) {\displaystyle \sigma _{\mathrm {ess} ,1}(A)