Superdiagonal
noun ·Rare ·Advanced level
Definitions
- 1 The diagonal of a matrix that lies directly above and to the right of the main diagonal.
"We classify all free spectrahedra that are circular, that is, closed under multiplication by exp(i t): up to unitary equivalence, the coefficients of a minimal LMI defining a circular free spectrahedron have a common block decomposition in which the only nonzero blocks are on the superdiagonal."
Example
More examples"We classify all free spectrahedra that are circular, that is, closed under multiplication by exp(i t): up to unitary equivalence, the coefficients of a minimal LMI defining a circular free spectrahedron have a common block decomposition in which the only nonzero blocks are on the superdiagonal."
Etymology
From super- + diagonal.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.