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On the structure of the diagonal conditions
Author(s) -
Erdahl R. M.
Publication year - 1978
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560130605
Subject(s) - diagonal , connection (principal bundle) , group (periodic table) , mathematics , regular polygon , structured program theorem , combinatorics , diagonal matrix , pure mathematics , matrix (chemical analysis) , physics , geometry , quantum mechanics , materials science , composite material
Some structural features of the diagonal problem of reduced density matrix theory are investigated by considering the cone B r introduced elsewhere. In some special cases, we discover a very tight connection between the group structure of G r , the invariance group of B r , and the convex structure of B r . We also state a general theorem that relates the convex structure of B r to the group structure of G r .