{"id":348278,"date":"2017-01-06T14:45:57","date_gmt":"2017-01-06T22:45:57","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/?post_type=msr-research-item&#038;p=348278"},"modified":"2018-10-16T20:00:52","modified_gmt":"2018-10-17T03:00:52","slug":"150a-quick-update-open-problems-blass-gurevich-shelahs-article-polynomial-time-computations-unordered-structures","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/150a-quick-update-open-problems-blass-gurevich-shelahs-article-polynomial-time-computations-unordered-structures\/","title":{"rendered":"A Quick Update on the Open Problems in Blass-Gurevich-Shelah&#8217;s article &#8220;On Polynomial Time Computations Over Unordered Structures&#8221;"},"content":{"rendered":"<p>The Blass-Gurevich-Shelah article in the title is [<a href=\"https:\/\/www.microsoft.com\/en-us\/research\/publication\/150-polynomial-time-computation-unordered-structures\/\">On Polynomial Time Computation Over Unordered Structures<\/a>]. The open problems are formulated in Section 7. They all are yes\/no questions. There are two lists of open questions. The first list contains four open questions. And then there is a list of two additional open questions. Here we<\/p>\n<ul>\n<li>recall the six questions,<\/li>\n<li>review their current status, and<\/li>\n<li>use this opportunity to advertise a related open question by Benjamin Rossman.<\/li>\n<\/ul>\n<p>This update is of December 2005. We presume that the reader is familiar with the article [<a href=\"https:\/\/www.microsoft.com\/en-us\/research\/publication\/150-polynomial-time-computation-unordered-structures\/\">On Polynomial Time Computation Over Unordered Structures<\/a>]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Blass-Gurevich-Shelah article in the title is [On Polynomial Time Computation Over Unordered Structures]. The open problems are formulated in Section 7. They all are yes\/no questions. There are two lists of open questions. The first list contains four open questions. And then there is a list of two additional open questions. Here we recall 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