Award Ceremony of Brazilian Math Olympiad, 2020, with some of the professors
IMO 2019, in Bath with the Romanian coordinators and members of the Romanian delegation:
IMO 2019, with coordinators (Imre Leader on the right):
IMO 2019, with the US team in London:
IMO 2018, with the US team in Cluj (including Po-Shen Loh, Sasha Rudenko, and Evan Chen), after they won:
With the teams of Bulgaria, Romania, USA during the joint training in Busteni, 2018:
IMO 2017, Rio de Janeiro, with organizers Edmilson Luis Rodrigues Motta and Carlos Yuzo Shine:
IMO 2017, Rio de Janeiro, with the coordinators of Problem 4:
MOP 2017, with part of the black group:
MOP 2017, with part of the black group:
MOP 2017, with the blue group:
MOP 2017, with part of the red group:
IMO 2016, Hong Kong, the winning team of the US (including Po-Shen and Alex Zhai):
IMO 2016, Hong Kong, the US and South Korean teams:
MOP 2016 Black group (which includes the 6 members of the US IMO team,
1 member of the Canadian IMO, 2 members of the IMO Singapore team, 1 member of the Australian IMO team, and 1 member of the Hungarian IMO team):
MOP 2016 Blue group (which includes 2 members of the Canadian IMO team):
MOP 2016 Red 1 group:
MOP 2016 Red 2 group:
Romanian Master of Mathematics, with the US winning team and Po-Shen Loh:
MOP 2015 Black group (which includes the 6 members of the US IMO team
and 2 members of the Canadian IMO team):
MOP 2015 Blue group:
MOP 2015 one of the Red groups:
MOP 2015 one of the Red groups:
With the students participating in the Olympiad Training Program
organized by the Ari de Sa high school in Fortalza (Brazil) in May 2015
(including the 6 members of the Brazilian IMO team):
With the US IMO team in 2014 in Cape Town, South Africa:
MOP 2014 Black group (which includes the 6 members of the US team and 3 members of the Canadian team):
MOP 2014 Blue group:
MOP 2014 Green group:
MOP 2014 Red group:
MOP 2013 Black group (which includes the 6 members of the US team):
MOP 2013 Blue group:
MOP 2013 Red groups:
Brazilian IMO Team 2013:
Brazilian IMO training, Grupo I:
Brazilian IMO training, Grupo II:
MOP 2012 Black group (which includes the 6 members of the US team):
MOP 2012 Blue group:
MOP 2012 Green group:
MOP 2012 Red group:
MOP 2012 Grading the TSTSTSTSTSTSTS:
MOP 2012 Grading the TSTSTS (everybody very tired):
Awesome Math 2012, Dallas:
An image with the leader (me, left), deputy leader (Zuming, right) and five of the
six
members of the team that won the Romanian Masters in Mathematics in 2011:
The participants in the Brazilian Math Olympiad program 2011:
(including the 6 members of the IMO team)
Grading the US Math Olympiad with Zuming Feng, Melanie Wood, and Elgin Johnston:
In 2008 in Madrid, with the six members of the US IMO team, as
well as Zuming Feng, Ian Le, and Steve Dunbar: