(I'm a mod here) - we appreciate the submissions you've been posting, but I'm afraid you've been breaking the site guidelines by editorializing the titles. From <a href="https://news.ycombinator.com/newsguidelines.html" rel="nofollow">https://news.ycombinator.com/newsguidelines.html</a>: "<i>Please use the original title, unless it is misleading or linkbait; don't editorialize.</i>"<p>As you can see, the idea is to rewrite a title if it's linkbaity or wrong, but otherwise not to rewrite a title.<p>I mention this because besides the current submission, <a href="https://news.ycombinator.com/item?id=33052806" rel="nofollow">https://news.ycombinator.com/item?id=33052806</a> and <a href="https://news.ycombinator.com/item?id=33051553" rel="nofollow">https://news.ycombinator.com/item?id=33051553</a> both had editorialized titles. They're good submissions otherwise!
A simply-stated conjecture in graph theory involving the reconstruction of a graph with N vertices from a collection of the N subgraphs that result when a vertex is deleted.