Invariance in  and  |
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| Authors: | Rebecca Weber |
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| Affiliation: | Department of Mathematics, 255 Hurley Hall, University of Notre Dame, Notre Dame, Indiana 46556 |
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| Abstract: | We define  , a substructure of  (the lattice of  classes), and show that a quotient structure of  ,  , is isomorphic to  . The result builds on the  isomorphism machinery, and allows us to transfer invariant classes from  to  , though not, in general, orbits. Further properties of  and ramifications of the isomorphism are explored, including degrees of equivalence classes and degree invariance. |
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| Keywords: | |
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