Solvable Leibniz algebras with triangular nilradical
  A classification exists for Lie algebras whose nilradical is the triangular Lie algebra $T(n)$. We extend this result to a classification of all solvable Leibniz algebras with nilradical $T(n)$. As an example we show the complete classification of all Leibniz algebras whose nilradical is $T(4)$. 
Lindsey Bosko-Dunbar, Matthew Burke, Jonathan Dunbar, J.T. Hird,   Kristen Stagg Rovira
math.RA