Timeline for Computing the eigenvalues of $A+E$ where $A$ is an upper triangular matrix whose diagonal entries are all zero and $E$ is a rank one matrix

9 events

when toggle format	what		by	license	comment
May 25, 2023 at 16:00	comment	added	ABB		@Iosif Pinelis, Yes. Thanks.
May 25, 2023 at 15:59	history	edited	ABB	CC BY-SA 4.0	edited body
May 25, 2023 at 15:54	comment	added	Iosif Pinelis		Instead of $i\le j+2$, did you mean $j\ge i+2$?
May 25, 2023 at 15:51	review	Close votes
Jun 15, 2023 at 3:05
May 25, 2023 at 15:49	history	edited	ABB	CC BY-SA 4.0	added 37 characters in body
May 25, 2023 at 15:36	comment	added	ABB		Yes, we need to make some modification.
May 25, 2023 at 15:35	history	edited	ABB	CC BY-SA 4.0	added 37 characters in body
May 25, 2023 at 15:35	comment	added	Jochen Glueck		If $A$ is zero and $n \ge 2$, then $A+E$ has only the eigenvalue $0$ with geometric multiplicity $n-1$ and algebraic multiplicity $n$. Am I overlooking an assumption?
May 25, 2023 at 15:32	history	asked	ABB	CC BY-SA 4.0