Template:Selected anniversaries/May 28
From Gnomon Chronicles
1829: Army officer, trader, and lecturer John Cleves Symmes, Jr. dies. He invented a variant of the Hollow Earth Theory, with openings to the inner world at the poles.
1936: Computer scientist, mathematician, logician, cryptanalyst and theoretical biologist Alan Turing submits On Computable Numbers for publication.
2015: Information scientist Claire Kelly Schultz dies.
