User:MarkH21

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e^{i\pi \ }

This user is a mathematician.

Erdős 2

This user has an Erdős number of 2.

PhD

This user has a Doctor of Philosophy degree in Mathematics.

This user teaches at a university or other institution of higher education.

This user has published peer-reviewed articles in academic journals.

WP

This user has been editing Wikipedia for more than 15 years (20+).

This user has page mover rights on the English Wikipedia. (verify)

This user has pending changes reviewer rights on the English Wikipedia. (verify)

This user has rollback rights on the English Wikipedia. (verify)

This user participates in
WikiProject Mathematics.

Editor since 2006, active editor since 2015.

I work in arithmetic geometry and Iwasawa theory.

Articles
Created
Adrian Zenz	Ahmed Abbes	Ariane Mézard
Arithmetic geometry	Bhargav Bhatt (mathematician)	Boston Chinatown massacre
Cayman Islands Coast Guard	Cayman Islands Regiment	Comac C939
Daniel-Marie Chabert de Joncaire de Clausonne	David Ginzburg	David Soudry
Demchok (historical village)	Demchok sector	Dihua Jiang
Eric Urban	Frank Calegari	Gan–Gross–Prasad conjecture
Genus g surface	Height function	Jacques Tilouine
Ladakh Chronicles	Louis-Thomas Chabert de Joncaire	Lucien Szpiro (fr)
Michel Maray de La Chauvignerie	OTT Airlines	Patrick X. Gallagher
Philipp Habegger	Philippe-Thomas Chabert de Joncaire	Pietro Corvaja
Prix Paul Doistau–Émile Blutet	Ring of modular forms	Samit Dasgupta
Siegel modular variety	Simion Filip	Stacky curve
Sug Woo Shin	Tamagawa number	Turks and Caicos Islands Regiment
Uriyangkhadai	Uyghur Human Rights Policy Act	Voice confrontation
Violet Oon	Wet markets in China	Wet markets in Hong Kong
Significant contributions
1976 Tangshan earthquake	2024 Copa América final	Alexander Oppenheim
Aleksei Parshin	Apeirogon	Avi Wigderson
Benedict Gross	Beppo Levi	Bombieri–Lang conjecture
Buffalo Presbyterian Church (Montello, Wisconsin)	Cecilia Chang	Charles G. Ridgely
Compositional data	Commercial Bank of Ethiopia Headquarters	Controversies of the Hong Kong Police Force
David Masser	Demchok, Ladakh	Dêmqog, Ngari Prefecture
Dennis Sullivan	Depth of field	Exodus of Kashmiri Hindus
Frances Hesselbein	Garifuna	Geometric Langlands correspondence
Golden Dragon massacre	Goro Shimura	Hong Kong Police Force
Jaylon Ferguson	Jean-Pierre Demailly	Jerrold B. Tunnell
Karen Uhlenbeck	Kashmir conflict	Ken Ribet
László Lovász	Lê dynasty	Lucien Szpiro
Infosys Prize	Iveagh Markets	Maryul
Moti Yung	Michael Wang (basketball)	Michel Raynaud
Mikio Sato	Mongol invasions of Vietnam	Nam tiến
Nelson Saiers	Nguyễn dynasty	Oka–Weil theorem
Paul D'Ambrosio	Pyotr Novikov	Reactions to the 2019–2020 Hong Kong protests
Robert MacPherson (mathematician)	Robin Hartshorne	San Tin
Separation of powers in Hong Kong	Semisimple representation	Sergei Novikov (mathematician)
Shou-Wu Zhang	Sons of Samoa	Tadao Tannaka
Tong sui	Torsion conjecture	Tubarial salivary gland
UEFA Euro 2024 final	Uyghur genocide	Virasoro group
Wet market	William Thurston	Xinjiang internment camps
Yuri Manin
Templates
Infobox mathematical statement
Categories
21st-century Moldovan mathematicians	21st-century Swiss mathematicians	Airlines established in 2020
Arithmetic geometers	Arithmetic geometry	Chinese companies established in 2020
Members of the Tunisian Academy of Sciences, Letters, and Arts	Prix Paul Doistau–Émile Blutet laureates	Tohoku Gakuin University
Academic staff of Tohoku Gakuin University	Tunisian Academy of Sciences, Letters, and Arts

This editor has been mentioned by multiple academic and media organizations:

Manas Sharma, Simon Scarr (28 November 2019). "How Hong Kong's keyboard warriors have besieged Wikipedia". Reuters. Retrieved 10 January 2020. "There has been a great increase in all types of disruptive editing including vandalism, edit wars, and extreme language from both of the major perspectives," said a volunteer editor with the username MarkH21, who has 13 years' experience.
Manas Sharma, Simon Scarr (28 November 2019). "Wiki wars: Hong Kong's online frontline". Reuters. Retrieved 10 January 2020. MarkH21 said that opinionated edits masquerading as factual or authoratative were the most difficult to repair.
Molly G. Hickman, Viral Pasad, Harsh Sanghavi, Jacob Thebault-Spieker, Sang Won Lee (June 2020). "Wiki HUEs: Understanding Wikipedia practices through Hindi, Urdu, and English takes on evolving regional conflict". Proceedings of the 2020 International Conference on Information and Communication Technologies and Development. Retrieved 28 November 2020. As another incident on the English Kashmir conflict page (A2), two editors made the same revision at two different times (January 22, 2019 and August 6, 2019), removing a section related to human rights violations by Indian forces against Kashmiris. On both occasions, the removal was undone by another editor [MarkH21] within fewer than fifteen minutes.{{cite news}}: CS1 maint: multiple names: authors list (link)

More information Barnstars ...

Barnstars

	The Original Barnstar
	Thank you for review the article to field of several complex variables. Thanks to that the article became clearer. SilverMatsu (talk) 11:02, 15 May 2021 (UTC)

	The Original Barnstar
	Thank you for the improvements on the Functions of several complex variables article and for clearly summarizing the proposal(WikiProject Mathematics). SilverMatsu (talk) 08:04, 11 March 2021 (UTC)

	The Original Barnstar
	Thank you for improving Oka–Weil theorem ! SilverMatsu (talk) 06:03, 1 March 2021 (UTC)

	The Anti-Vandalism Barnstar
	I appreciate your tireless work in preventing Wikipedia from vandalism and offcourse your recent work reporting Authordom, who gave me so much headache. I'm at ease finding him globally locked now. Well done my friend, well done! ─ The Aafī on Mobile ^{^(talk)} 21:01, 30 December 2020 (UTC)

Thanks for putting BNT162b2 through the In the News process, including the nomination, conversation, and article updates. Blue Rasberry (talk) 15:20, 3 December 2020 (UTC)

	The Random Acts of Kindness Barnstar
	You definitely deserve this for helping me since I can't edit the page right now. If only the world was as kind! 7645ERB (talk) 18:35, 28 October 2020 (UTC)

	The Teamwork Barnstar
	For the initial work on and laying the foundations of Depsang plains. DTM (talk) 07:03, 21 September 2020 (UTC)

		The Random Acts of Kindness Barnstar
		For taking a moment to welcome new editors: Thanks! ProClasher97 (talk) 03:49, 9 May 2020 (UTC)

Infobox mathematical statement

Thank you for quality articles around math such as Karen Uhlenbeck, Patrick X. Gallagher and Height function, based on scientific expertise, for patience when implementing {{Infobox mathematical statement}}, for improving articles, with diligent edit summaries, for welcoming new users, - you are an awesome Wikipedian!

--Gerda Arendt (talk) 15:37, 3 May 2019 (UTC)

		The Original Barnstar
		This is for your valuable efforts for contributing to Wikipedia PATH SLOPU 09:15, 6 April 2019 (UTC)

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