Vi Hart

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Vi Hart
Hart in 2012, sitting on top of a finished project
Hart in 2012, sitting on top of a finished project
Victoria Hart

1988 (age 33–34)
OccupationYouTube personality, educator, inventor
Known forMathematical/musical YouTube videos
YouTube information
Years active2009–present
  • Education
  • Music
Subscribers1.42 million[1]
Total views141 million[1]
YouTube Silver Play Button 2.svg 100,000 subscribers
YouTube Gold Play Button 2.svg 1,000,000 subscribers

Last updated: 12 Jul 2022

Victoria Hart (born 1988),[2][3] commonly known as Vi Hart (/ˈv hɑːrt, ˈv hɑːrt/),[4] is an American mathematician and YouTuber. They describe themselves as a "recreational mathemusician" and are well-known for creating mathematical videos on YouTube.[5][6][7] Hart founded the virtual reality research group eleVR and has co-authored several research papers on computational geometry and the mathematics of paper folding.[8][9]

Together with another YouTube mathematics popularizer, Matt Parker, Hart won the 2018 Communications Award of the Joint Policy Board for Mathematics for "entertaining, thought-provoking mathematics and music videos on YouTube that explain mathematical concepts through doodles".[10]

Early life and education[edit]

Hart is the child of mathematical sculptor George W. Hart, and received a degree in music at Stony Brook University.[5] Hart identifies as "gender agnostic";[11] in a video released in 2015, they spoke about their lack of gender identity—including lacking non-binary identities such as agender—and their attitude to gendered terms such as pronouns as a "linguistic game" that they were not interested in playing. They indicated that they have no preference and do not care which pronouns they are called by.[12]


Hart's career as a mathematics popularizer began in 2010 with a video series about "doodling in math class". After these recreational mathematics videos — which introduced topics like fractal dimensions — grew popular, they were featured in The New York Times and on National Public Radio,[5][13] eventually gaining the support of the Khan Academy and making videos for the educational site as their "Resident Mathemusician".[14][15] Many of Hart's videos combined mathematics and music, such as "Twelve tones", which was called "deliriously and delightfully profound" by Salon.[16]

Together with Henry Segerman, Hart wrote "The Quaternion Group as a Symmetry Group", which was included in the anthology The Best Writing on Mathematics 2015.[17]

In 2014, Hart founded a research group called eleVR, with Emily Eifler and Andrea Hawksley, to research virtual reality (VR). The group created VR videos, and had also collaborated on educational computer games.[18][19][20][4][21] They created the game Hypernom, where the player has to eat part of 4 dimensional polytopes which are stereographically projected into 3D and viewed using a virtual reality headset.[22][23] In June, eleVR released an open source web video player that worked with the Oculus Rift.[24] In the same year Hart created the playable blog post Parable of the Polygons with Nicky Case. The game was based on economist Thomas Schelling's Dynamic Models of Segregation.[19][25] In May 2016, eleVR joined Y Combinator Research (YCR) as part of the Human Advancement Research Community (HARC) project[26], in which Hart was listed as a Principal Investigator.[27]

As of 2020, Hart is a Senior Research Project Manager at Microsoft.[28]

See also[edit]


  1. ^ a b "About YouTube channel". YouTube.
  2. ^ "Khan Academy's mathemusician Vi Hart brings dull lessons to life". Wired. Retrieved January 27, 2016.
  3. ^ "Mathematical artist: Why hyperbolic space is awesome". New Scientist. Retrieved January 27, 2016.
  4. ^ a b "FAQ". Vi Retrieved December 12, 2014.
  5. ^ a b c Chang, Kenneth (January 17, 2011), "Bending and Stretching Classroom Lessons to Make Math Inspire", The New York Times.
  6. ^ Bell, Melissa (December 17, 2010), "Making math magic: Vi Hart doodles her lessons", The Washington Post.
  7. ^ Krulwich, Robert (December 16, 2010), I Hate Math! (Not After This, You Won't), NPR
  8. ^ Vi Hart at DBLP Bibliography Server Edit this at Wikidata. Retrieved March 29, 2014.
  9. ^ "Reshaping the Universe: VR Landscapes Explore Mind-Bending Geometry". Live Science. March 29, 2017.
  10. ^ "Vi Hart and Matt Parker to Receive 2018 JPBM Communications Awards", News, Events and Announcements, American Mathematical Society, December 8, 2017
  11. ^ Hart, Vi [@vihartvihart] (April 30, 2014). "Fun fact: I consider myself gender agnostic. "Person," not "Woman," please. I respect your religion, but don't like having it pushed on me" (Tweet). Archived from the original on March 5, 2016 – via Twitter.
  12. ^ Hart, Vi (June 8, 2015). On Gender (Online video). YouTube.
  13. ^ "I Hate Math! (Not After This, You Won't)". Retrieved November 12, 2016.
  14. ^ Khan Academy (January 3, 2012), Announcement, retrieved January 7, 2018
  15. ^ Gans, Joshua (January 24, 2012). "Learning on Speed". Harvard Business Review. Retrieved January 8, 2018.
  16. ^ Leonard, Andrew (June 28, 2013). "The mad genius of Vi Hart". Salon. Retrieved January 8, 2018.
  17. ^ Hart, Vi; Segerman, Henry (January 12, 2016). "The Quaternion Group as a Symmetry Group". In Pitici, Mircea (ed.). The Best Writing on Mathematics 2015. Princeton University Press. pp. 141–153. arXiv:1404.6596. Bibcode:2014arXiv1404.6596H. ISBN 9781400873371.
  18. ^ "About Us". eleVR. Retrieved December 12, 2014.
  19. ^ a b Case, Nicky; Hart, Vi. "Parable of the Polygons". Retrieved December 12, 2014.
  20. ^ Bhatia, Aatish (December 8, 2014). "Empirical Zeal How Small Biases Lead to a Divided World: An Interactive Exploration of Racial Segregation". Wired.
  21. ^ "Introducing eleVR – Vi Hart".
  22. ^ Lawson-Perfect, Christian (July 31, 2015). "Hypernom". The Aperiodical. Retrieved April 5, 2016.
  23. ^ Hart, Vi; Hawksley, Andrea; Segerman, Henry; Bosch, Marc ten (July 21, 2015). "Hypernom: Mapping VR Headset Orientation to S^3". Proceedings of Bridges 2015: Mathematics, Music, Art, Architecture, Culture. pp. 387–390. arXiv:1507.05707. Bibcode:2015arXiv150705707H.
  24. ^ "eleVR: the first web video player for virtual reality".
  25. ^ Farokhmanesh, Megan (December 11, 2014). "A visual guide to bias, as explained by adorable shapes". Polygon.
  26. ^ "eleVR leaving YCR – elevr".
  27. ^ Altman, Sam (May 11, 2016). "HARC". Y Combinator Blog. Retrieved June 20, 2016.
  28. ^ Allen, Danielle (April 21, 2020). "Roadmap to Pandemic Resilience" (PDF). Edmond J. Safra Center for Ethics. Harvard University. Retrieved April 21, 2020.

External links[edit]