This document is focused on exposing the anonymous twitter account @DumbGeometer. This account is currently private, but screenshots detailing their racist beliefs and nazism can be found at the end of this document. The account consistently espoused the beliefs that Black people are genetically inferior to white people, that the holocaust was fabricated, and that women are inferior to men. The main body of this document is focused on presenting evidence that @DumbGeometer is Brian Klatt, a visiting assistant professor at Rutgers and Lehigh, and graduate of Lehigh. Here is a screenshot of his linkedin page as of October 10th. Lehigh profile: https://math.cas.lehigh.edu/brian-klatt-0 @DumbGeometer talked about a new faculty orientation in Fall of 2021 (Klatt would be at Lehigh at this time) which included a presentation by a Black male mathematician who had previously served in the military. The Vice President for Equity and Community and University Diversity and Inclusion Officer at Lehigh is Dr. Donald A. Outing (https://diversityandinclusion.lehigh.edu/staff/donald-outing-phd) who matches this description and has been part of past new faculty orientations. See here: https://drive.google.com/file/d/1tkzO7g_xBDzNSit4qjERMZem5RZ3KXk2/view @DumbGeometer claimed to be teaching abstract algebra in Fall 2019, specifically in “...ad Classroom Building 333”. Klatt also taught an abstract algebra class in the fall of 2019 in Allison Road Classroom Building 333 at Rutgers. https://math.rutgers.edu/fall-2019-undergraduate-teaching-schedule @DumbGeometer also talked about teaching a real analysis course at exactly the same time that Klatt taught that course at Rutgers, as seen in his LinkedIn. Here is a screenshot of @DumbGeometer referencing teaching calculus and here is a link to the Fall 2021 teaching schedule at Lehigh: https://math.cas.lehigh.edu/sites/math.cas2.lehigh.edu/files/Fall%202021%20Teaching%20S chedule%20%28with%20teaching%20assignments%207-7-21%29.pdf (The above was posted 10/09/21. Also, the number 6,000,000 is a dogwhistle about the Holocaust; when he says “unbelievably big” he is implying that the Holocaust didn’t happen.) @DumbGeometer claims to have taken a topological robotics class as a grad student and attended a lecture series by Gunnar Carlsson about topological data complexity; such class was offered at Lehigh University while Klatt was a PhD student there, as was a lecture series by Gunnar Carlsson. Lehigh topics course: https://www.lehigh.edu/~sub216/c1de2a5f631b57bb62bc5d4335c962ef.html Lehigh lecture series: https://www.lehigh.edu/~dac311/colloquium/2013_Pitcher-Lecture-Series_poster.pdf @DumbGeometer claimed to be producing a series of math focused YouTube videos throughout 2020. Klatt also began to produce math videos in this period. Klatt’s YouTube channel: https://www.youtube.com/channel/UC48bxWorUj_746mkNdtGNsw/videos Here are side by side comparisons of @DumbGeometer in a Halloween costume and Klatt @DG: . Brian Klatt: @DumbGeometer consistently claimed to work in differential geometry (and Brian Klatt does work in differential geometry), see this sample computation he posted on twitter and him reading a book on the geometry of black holes: Here is a paper Klatt posted on the arXiv in December of 2020: https://arxiv.org/abs/2012.13848 Here is a screenshot of a paper @DumbGeometer was working on in January of 2020: Klatt and @DumbGeometer also got their PhDs in the same month and year, August 2018. Also, @DumbGeometer posted this image during the start of the pandemic: And Brian Klatt was teaching at Rutgers in the Spring 2020 and Fall 2019 semesters (so presumably in person in New Jersey most of the time). Finally, the account recovery page for @DumbGeometer (the page you’re shown if you say it’s your account and you forgot the password) shows this and Brian Klatt’s personal email is [email protected], see the last page of this paper: https://arxiv.org/pdf/2106.13848.pdf. Miscellaneous Screenshot Archive:
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