Willem de Sitter
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Willem de Sitter was a Dutch mathematician, physicist, and astronomer. He is known for the de Sitter universe, which is a cosmological model that was named after him.
De Sitter, c. 1930s
Albert Einstein, Paul Ehrenfest, Willem de Sitter, Arthur Eddington, and Hendrik Lorentz in Leiden (1923)
"The Dreams in the Witch House" is a horror short story by American writer H. P. Lovecraft and part of the Cthulhu Mythos cycle. It was written in January/February 1932 and first published in the July
Willem de Sitter
…Anti-de Sitter space The Dreams in the Witch House O'Connor, John J.; Robertson, Edmund F., "Willem de Sitter", MacTutor History of Mathematics Archive, University of St Andrews…
Brown Jenkin (illustration by Muzski)
The Black Man (illustration by Jens Heimdahl)