Timeline for Why is the set of Hermitian matrices with repeated eigenvalue of measure zero?
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| Apr 14, 2022 at 10:29 | comment | added | Ryan Budney | @DenisSerre: Well, the argument gives a little more than what was stated. The Jordan forms gives a stratification of the space of matrices, with matrices having repeated roots being of positive codimension. The stratification can be written in the language of Grassman manifolds and associated flag manifolds. I ?imagine? someone has described this but I don't know this end of the literature very well. | |
| Apr 14, 2022 at 9:48 | comment | added | Denis Serre | This does not answer the question, since it proves only that the inetrior of the set of Hermitian matrices with repeated eigenvalues is void. | |
| Apr 14, 2022 at 1:16 | history | answered | Ryan Budney | CC BY-SA 4.0 |