Open problems by source and shape

Custom SQL query returning 15 rows (hide)

select case when sourced_how like 'wikipedia%' then 'wikipedia' when sourced_how like 'stack exchange%' then 'stack exchange' when sourced_how like 'Erd%' then 'erdős database' when sourced_how like 'enumerated in arXiv%' then 'arxiv open-problem papers' when sourced_how='contested claim' then 'our contested claims' else 'curated' end source, shape, count(*) n from open_problem where status='open' group by 1,2 order by 1,3 desc

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