{"action":"created","issue":{"url":"https://api.github.com/repos/tbeu/Modelica/issues/162","repository_url":"https://api.github.com/repos/tbeu/Modelica","labels_url":"https://api.github.com/repos/tbeu/Modelica/issues/162/labels{/name}","comments_url":"https://api.github.com/repos/tbeu/Modelica/issues/162/comments","events_url":"https://api.github.com/repos/tbeu/Modelica/issues/162/events","html_url":"https://github.com/tbeu/Modelica/issues/162","id":196284225,"number":162,"title":"Incorrect description of diagonalizable matrices in eigenValues-routine","user":{"login":"modelica-trac-importer","id":22202507,"avatar_url":"https://avatars.githubusercontent.com/u/22202507?v=3","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"labels":[{"id":502947092,"url":"https://api.github.com/repos/tbeu/Modelica/labels/bug","name":"bug","color":"ee0701","default":true},{"id":502956393,"url":"https://api.github.com/repos/tbeu/Modelica/labels/Math","name":"Math","color":"0000aa","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2016-12-18T16:22:23Z","updated_at":"2016-12-18T16:22:43Z","closed_at":null,"body":"**Reported by HansOlsson on 17 Apr 2009 12:52 UTC**\nModelica.Math.Matrices.eigenValues\nincorrectly state that:\n\n---\nWith function Matrices.eigenValueMatrix, a real block diagonal matrix is constructed from the eigenvalues such that \nA = eigenvectors * eigenValueMatrix(eigenvalues) * inv(eigenvectors)\nprovided the eigenvector matrix \"eigenvectors\" can be inverted (an inversion is possible, if all eigenvalues are different and no eigenvalue is zero). \n--\nThe following text at the end should be removed:\n\"and no eigenvalue is zero\".\n\nThis is diagonalizing, and a matrix can always be diagonalized if the eigenvalues are different (regardless of whether is zero or not). If some eigenvalues are the same the matrix can sometimes be diagonalized - but the text uses \"if\" and not \"if and only if\" so that should be ok.\n\n\nMigrated-From: https://trac.modelica.org/Modelica/ticket/162"},"comment":{"url":"https://api.github.com/repos/tbeu/Modelica/issues/comments/267830423","html_url":"https://github.com/tbeu/Modelica/issues/162#issuecomment-267830423","issue_url":"https://api.github.com/repos/tbeu/Modelica/issues/162","id":267830423,"user":{"login":"modelica-trac-importer","id":22202507,"avatar_url":"https://avatars.githubusercontent.com/u/22202507?v=3","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"created_at":"2016-12-18T16:22:43Z","updated_at":"2016-12-18T16:22:43Z","body":"**Comment by dietmarw on 17 Jun 2009 06:46 UTC**\nScheduled for MSL3.1"}}
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