Q&A for gardeners and landscapers
SELECT DISTINCT tags FROM posts WHERE OwnerUserId IN ( SELECT DISTINCT posts.OwnerUserId FROM posts INNER JOIN users ON posts.OwnerUserId = users.id WHERE posts.tags LIKE '%pr.probability%' AND posts.tags LIKE '%linear-algebra%' AND posts.tags LIKE '%matrices%' AND posts.tags LIKE '%lie-groups%' );