{"action":"created","issue":{"url":"https://api.github.com/repos/FStarLang/FStar/issues/319","repository_url":"https://api.github.com/repos/FStarLang/FStar","labels_url":"https://api.github.com/repos/FStarLang/FStar/issues/319/labels{/name}","comments_url":"https://api.github.com/repos/FStarLang/FStar/issues/319/comments","events_url":"https://api.github.com/repos/FStarLang/FStar/issues/319/events","html_url":"https://github.com/FStarLang/FStar/issues/319","id":101725036,"number":319,"title":"strict positivity check","user":{"login":"aa755msr","id":12737628,"avatar_url":"https://avatars.githubusercontent.com/u/12737628?v=3","gravatar_id":"","url":"https://api.github.com/users/aa755msr","html_url":"https://github.com/aa755msr","followers_url":"https://api.github.com/users/aa755msr/followers","following_url":"https://api.github.com/users/aa755msr/following{/other_user}","gists_url":"https://api.github.com/users/aa755msr/gists{/gist_id}","starred_url":"https://api.github.com/users/aa755msr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aa755msr/subscriptions","organizations_url":"https://api.github.com/users/aa755msr/orgs","repos_url":"https://api.github.com/users/aa755msr/repos","events_url":"https://api.github.com/users/aa755msr/events{/privacy}","received_events_url":"https://api.github.com/users/aa755msr/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/FStarLang/FStar/labels/bug","name":"bug","color":"fc2929"},{"url":"https://api.github.com/repos/FStarLang/FStar/labels/Priority%201","name":"Priority 1","color":"f7c6c7"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2015-08-18T18:51:12Z","updated_at":"2016-07-01T11:43:26Z","closed_at":null,"body":"type negativeFunctor : Type -> Type\r\n//type negativeFunctor (a:Type) = a -> Tot nat\r\n\r\ntype bad =\r\n|Bad : (negativeFunctor bad) -> bad\r\n\r\nAbstract functors should not be presumed to be positive. One can provide a negative implementation and violate termination guarantees."},"comment":{"url":"https://api.github.com/repos/FStarLang/FStar/issues/comments/229926382","html_url":"https://github.com/FStarLang/FStar/issues/319#issuecomment-229926382","issue_url":"https://api.github.com/repos/FStarLang/FStar/issues/319","id":229926382,"user":{"login":"aseemr","id":3921573,"avatar_url":"https://avatars.githubusercontent.com/u/3921573?v=3","gravatar_id":"","url":"https://api.github.com/users/aseemr","html_url":"https://github.com/aseemr","followers_url":"https://api.github.com/users/aseemr/followers","following_url":"https://api.github.com/users/aseemr/following{/other_user}","gists_url":"https://api.github.com/users/aseemr/gists{/gist_id}","starred_url":"https://api.github.com/users/aseemr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aseemr/subscriptions","organizations_url":"https://api.github.com/users/aseemr/orgs","repos_url":"https://api.github.com/users/aseemr/repos","events_url":"https://api.github.com/users/aseemr/events{/privacy}","received_events_url":"https://api.github.com/users/aseemr/received_events","type":"User","site_admin":false},"created_at":"2016-07-01T11:43:26Z","updated_at":"2016-07-01T11:43:26Z","body":"@s-zanella , @nikswamy and I have talked about this. The implementation would be very similar to that of the hasEq check. The week after next I will work with @nikswamy to iron out the issues with hasEq, and then hopefully get to positivity."}}
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