Hermann Vermeil (1889–1959) was a German mathematician who produced the first published proof that the scalar curvature is the only absolute invariant among those of prescribed type suitable for Albert Einstein’s theory.[1] The theorem was proved by him in 1917[2] when he was Hermann Weyl's assistant.
^Kosmann-Schwarzbach, Y. (2011), The Noether Theorems: Invariance and Conservation Laws in the Twentieth Century: Invariance and Conservation Laws in the 20th Century, Sources and Studies in the History of Mathematics and Physical Sciences, New York Dordrecht Heidelberg London: Springer, p. 71, doi:10.1007/978-0-387-87868-3, ISBN978-0-387-87867-6
^H. Vermeil (1917). "Nachrichten von der Königlichen Gesellschaft der Wissenschaften zu Göttingen". Mathematisch physikalische Klasse. 21: 334–344.
