Iroquois national indoor lacrosse team 3 teams, with the Iroquois West team winning bronze. The tournament changed its name to the World Junior Lacrosse Championships in 2016 and added an under–17 division. The Iroquois had three under–19 teams – West, East, and Grand River – and an under–17 team. The Iroquois West team took gold, with the Iroquois Grand River winning bronze. The under–17 Iroquois team defeated Canada's under–17 squad to win gold. After missing a year, the 2018 World Junior Lacrosse Championship changed format again, this time an indoor under-20 round robin tournament featuring the United States, Canada and the Iroquois national teams. With
Word problem for groups would expect it to be difficult to prove as the mapping from presentations to simple groups would have to be non-recursive. The following has been proved by Bernhard Neumann and Angus Macintyre: What is remarkable about this is that the algebraically closed groups are so wild that none of them has a recursive presentation. The oldest result relating algebraic structure to solvability of the word problem is Kuznetsov's theorem: To prove this let ⟨"X"|"R"⟩ be a recursive presentation for "S". Choose "a" ∈ S such that "a" ≠ 1 in "S". If "w" is a word on the generators "X"