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Timeline for Solving $AX+X^TB=C$?

Current License: CC BY-SA 4.0

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Nov 4, 2020 at 18:36 comment added Yaroslav Bulatov BTW, evaluated a couple of reduction methods here -- wolframcloud.com/obj/yaroslavvb/newton/t-sylvester-solve.nb . Reducing to spectral decomposition gives acceptable quality, but the speed could use improvement -- 2.9 seconds end-to-end where diagonalization takes 1.3 seconds and Shur takes 1.0 seconds
Nov 2, 2020 at 16:51 comment added Wolfgang Bangerth Always fun to find questions on here where just the right person is able to answer :-)
Nov 1, 2020 at 17:30 comment added Federico Poloni That route has dubious stability properties, though.
Nov 1, 2020 at 17:14 comment added Yaroslav Bulatov thanks for the reference....it seems there's also a straightforward way to convert it to regular Sylvester equation and reuse those solvers
Oct 31, 2020 at 16:22 vote accept Yaroslav Bulatov
Oct 31, 2020 at 8:02 history edited Federico Poloni CC BY-SA 4.0
added 83 characters in body
Oct 31, 2020 at 7:47 history answered Federico Poloni CC BY-SA 4.0