Heinrich Burkhardt (1891-1914)

"Heinrich Friedrich Karl Ludwig Burkhardt (15 October 1861 – 2 November 1914) was a German mathematician. He famously was one of the two examiners of Albert Einstein's PhD thesis Eine neue Bestimmung der Moleküldimensionen. Of Einstein's thesis he stated: "The mode of treatment demonstrates fundamental mastery of the relevant mathematical methods" and "What I checked, I found to be correct without exception."" - (en.wikipedia.org 18.05.2021)